The Weyl Algebra and the Structure of Lie Superalgebras of Riemannian Type
Bertram Kostant
黎曼型李超代数将二次李代数表示为Weyl代数。这种表示导致黎曼型李超代数的一个充要条件是Casimir映射为常数。
A Lie superalgebrea of Riemannian type leads to a representation of a quadratic Lie algebra into a Weyl algebra. A necessary and sufficient condition that such a representation leads to a Lie superalgebra of Riemannian type is that the Casimir maps to a constant.
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Coxeter Graphs for Super Weyl Groups of Exceptional Classical Lie Superalgebras
本文研究例外经典李超代数的基本系统，确定对应超韦尔群的Coxeter图，验证了CLS中关于D(2,1,α)、F(4)和G(3)超韦尔群Coxeter图的猜想。
We construct a family of twisted generalized Weyl algebras which includes Weyl-Clifford superalgebras and quotients of the enveloping algebras of $\mathfrak{gl}(m|n)$ and $\mathfrak{osp}(m|2n)$. We give a condition for when a canonical representation by differential operators is faithful. Lastly, we give a description of the graded support of these algebras in terms of pattern-avoiding vector compositions.
Let $A$ be a commutative, associative algebra with unity over $\mathbb{C}$. Using the definition of global Weyl modules for the map superalgebras given by Calixto, Lemay, and Savage we explicitly describe the structure of certain quotients of the global Weyl modules for the map superalgebra $\mathfrak{sl}(2,1)\otimes A$. We also give a nice basis for these modules. This work is an extension of a Theorem of Feigin and Loktev describing the structure of the Weyl module for the map algebra $\mathfrak{sl}_2\otimes A$. This work can naturally be extended to similar quotients of the global Weyl modu…
We define global and local Weyl modules for $q \otimes A$, where $q$ is the queer Lie superalgebra and $A$ is an associative commutative unital $\mathbb{C}-$algebra. We prove that global Weyl modules are universal highest weight objects in certain category upto parity reversing functor $Π$. Then with the assumption that $A$ is finitely generated and with a special technical condition which simple root system of $q$ satisfy it is shown that the local Weyl modules are finite dimensional. Further they are universal highest map-weight objects in certain category upto $Π$. Finally we prove a tensor…
This paper is a contribution to the study of the geometry of algebras related the Weyl groupoid initiated in \cite{M22}. The Nullstellensatz gives a bijection between radical ideals of such an algebra and their zero loci, the superalgebraic sets. Such sets are exactly the (Zariski) closed sets that are invariant under the action of a suitable groupoid, and the smallest superalgebraic set containing a given closed set can be described explicitly. Here we give several examples of superalgebraic sets. We also give several characterizations of Laurent supersymmetric polynomials. These adapt to uni…
Given an algebraically closed field $\Bbbk$ of characteristic zero, a Lie superalgebra $\mathfrak{g}$ over $\Bbbk$ and an associative, commutative $\Bbbk$-algebra $A$ with unit, a Lie superalgebra of the form $\mathfrak{g} \otimes_\Bbbk A$ is known as a map superalgebra. Map superalgebras generalize important classes of Lie superalgebras, such as, loop superalgebras (where $A=\Bbbk[t, t^{-1}]$), and current superalgebras (where $A=\Bbbk[t]$). In this paper, we define Weyl functors, global and local Weyl modules for all map superalgebras where $\mathfrak{g}$ is either $\mathfrak{sl} (n,n)$ with…
Weyl modules for equivariant map Lie superalgebras
本文将非扭情形的Weyl模推广到等变（扭）映射李超代数，定义了整体、局部Weyl模及Weyl函子，证明其泛性质、有限生成性、有限维性及扭模与非扭模的对应关系。
Schur--Weyl Equivalences for Wreath Product Superalgebras
本文研究了Wreath积超代数与一般线性李代数之间的超模等价关系，并给出了n≥d+1的界无法改进的例子。
We give a proof of a Schur-Weyl duality statement between the Brauer algebra and the ortho-symplectic Lie superalgebra $\mathfrak{osp}(V)$.
Weyl denominator identity for finite-dimensional Lie superalgebras, conjectured by V.~Kac and M.~Wakimoto in 1994, is proven.
Lie Superalgebras Generated by Reflections in Weyl Groups of Classical Type
研究经典类型韦伊尔群作为超群，其反射具有奇超度，通过格雷德交换子括号将复群代数视为李超代数，确定由反射集生成的李超子代数结构，结果为群代数的导出子代数加上反射类和的张量。
Two super-analogs of the Schur-Weyl duality are considered: the duality of actions in $(\mathbb{C}^{m|n})^{\otimes N}$ of the Lie superalgebra $\mathfrak{gl}(m,n)$ and the symmetric group $S_N$, and the duality of actions of the Lie superalgebra $Q(n)$ and a certain finite group $Se(N)$ in $(\mathbb{C}^{n|n})^{\otimes N}$. We construct an isomorphism of symmetric and universal enveloping algebras of these Lie superalgebras called special symmetrization. Using this isomorphism of vector spaces we describe explicitly the duality between the centers of the corresponding universal enveloping algeb…
We study three related topics in representation theory of classical Lie superalgebras. The first one is classification of primitive ideals, i.e. annihilator ideals of simple modules, and inclusions between them. The second topic concerns Arkhipov's twisting functors on the BGG category O. The third topic addresses deformed orbits of the Weyl group. These take over the role of the usual Weyl group orbits for Lie algebras, in the study of primitive ideals and twisting functors for Lie superalgebras.
Weyl denominator identity for the affinization of a basic Lie superalgebra with a non-zero Killing form was formulated by Kac and Wakimoto and was proven by them in defect one case. In this paper we prove this identity.
Schur-Weyl reciprocity between the quantum superalgebra and the Iwahori-Hecke algebra
本文在分次向量空间的张量空间上引入了Iwahori-Hecke代数的符号q-置换表示.建立了量子广义超李代数与Iwahori-Hecke代数之间的Schur-Weyl互易性.我们的结果包含了超情形和量子情形的Schur-Weyl互易性，统一了这两种重要情形。
We define global and local Weyl modules for Lie superalgebras of the form $\mathfrak{g} \otimes A$, where $A$ is an associative commutative unital $\mathbb{C}$-algebra and $\mathfrak{g}$ is a basic Lie superalgebra or $\mathfrak{sl}(n,n)$, $n \ge 2$. Under some mild assumptions, we prove universality, finite-dimensionality, and tensor product decomposition properties for these modules. These properties are analogues of those of Weyl modules in the non-super setting. We also point out some features that are new in the super case.
We prove the Weyl denominator identity for the affine Lie superalgebra gl(2|2)^ conjectured by V. Kac and M. Wakimoto. As it was pointed out in their paper, this gives another proof of Jacobi identity for the number of presentations of a given integer as a sum of eight squares.
Schur-Weyl duality for quantum toroidal superalgebras
本文建立了双重仿射 Hecke 代数与量子环面超代数之间的 Schur-Weyl 型对偶，将 Vasserot-Varagnolo [VV96] 的经典结果推广到了超情形。
We introduce a new family of superalgebras $\overrightarrow{B}_{r,s}$ for $r, s \ge 0$ such that $r+s>0$, which we call the walled Brauer superalgebras, and prove the mixed Scur-Weyl-Sergeev duality for queer Lie superalgebras. More precisely, let $\mathfrak{q}(n)$ be the queer Lie superalgebra, ${\mathbf V} =\mathbb{C}^{n|n}$ the natural representation of $\mathfrak{q}(n)$ and ${\mathbf W}$ the dual of ${\mathbf V}$. We prove that, if $n \ge r+s$, the superalgebra $\overrightarrow{B}_{r,s}$ is isomorphic to the supercentralizer algebra $_{\mathfrak{q}(n)}({\mathbf V}^{\otimes r} \otimes {\mat…
We study a class of modules, called Chari-Venkatesh modules, for the current superalgebra $\mathfrak{sl}(1|2)[t]$. This class contains other important modules, such as graded local Weyl, truncated local Weyl and Demazure-type modules. We prove that Chari-Venkatesh modules can be realized as fusion products of generalized Kac modules. In particular, this proves Feigin and Loktev's conjecture, that fusion products are independent of their fusion parameters in the case where the fusion factors are generalized Kac modules. As an application of our results, we obtain bases, dimension and character …
The Schur-Weyl duality and Invariants for classical Lie superalgebras
本文基于Schur-Weyl对偶性的超类比，统一刻画经典李超代数的不变量，建立其张量代数等的$\frak{g}$-不变量及关系，证明投影限制满射性以确定中心生成元，并给出$\frak{Z}(\frak{p}_n)$平凡性的新证明。
Highest weight modules over Borcherds-Bozec superalgebras and their character formula
该研究提出并证明了带支配整最高权的Borcherds-Bozec超代数上不可约最高权模的Weyl-Kac型特征公式。
Root groupoid and related Lie superalgebras
本文提出根群胚概念以替代 Kac-Moody 李超代数中的 Weyl 群，构造并分类相关的根超代数，并通过骨架图建立 Coxeter 性质，推广了经典 Weyl 群理论。
Degenerating the quantum queer Schur superalgebra ${\mathcal{Q}_q(n,r; R)}$ to the case $q=1$, the queer Schur superalgebra ${\mathcal{Q}(n,r)}$ is obtained. In this article, we reconstruct the universal enveloping algebra ${U({\mathfrak{q}_n})}$ of the queer Lie superalgebra ${\mathfrak{q}_n}$ via ${\mathcal{Q}(n,r)}$, and achieve another explanation of the Schur-Weyl-Sergeev duality. Finally, we depict the Schur-Weyl-Sergeev duality over $\mathbb{Z}$.
We investigate a new cohomology of Lie superalgebras, which may be compared to a de Rham cohomology of Lie supergroups involving both differential and integral forms. It is defined by a BRST complex of Lie superalgebra modules, which is formulated in terms of a Weyl superalgebra and incorporates inequivalent representations of the bosonic Weyl subalgebra. The new cohomology includes the standard Lie superalgebra cohomology as a special case. Examples of new cohomology groups are computed.
In this paper, we introduce super Weyl groups, their distinguished elements and properties for basic classical Lie superalgebras. Then we formulate Jantzen filtration for baby Verma modules in graded restricted module categories of basic classical Lie superalgebras over an algebraically closed field of odd characteristic, and prove a sum formula in the corresponding Grothendieck groups. We finally obtain a strong linkage principle in such categories.
A duality of the twisted group algebra of the symmetric group and a Lie superalgebra
设A_k表示对称群S_k的扭群代数，其表示对应于S_k的非线性射影表示.我们建立了A_k与一个李超代数q（n）之间的对偶关系，有时称之为“queer”李超代数.这种对偶性澄清了舒尔公式，就像舒尔-外尔对偶性澄清了弗罗贝纽斯公式一样。
In this paper, we classify simple strong Harish-Chandra modules over the Lie superalgebra $W_{m,n}$ of vector fields on $\C^{m|n}$. Any such module is the unique simple submodule of some tensor module $F(P,V)$ for a simple weight module $P$ over the Weyl superalgebra $\mathcal K_{m,n}$ and a simple weight module $V$ over the general linear superalgebra $\gl_{m,n}$.
We develop a reduction procedure which provides an equivalence (as highest weight categories) from an arbitrary block (defined in terms of the central character and the integral Weyl group) of the BGG category O for a general linear Lie superalgebra to an integral block of O for (possibly a direct sum of) general linear Lie superalgebras. We also establish indecomposability of blocks of O.
Rational Schur Superalgebras
本文将有有理Schur代数推广到超设置，为研究一般线性超群的有理超模提供新方法，并建立了Schur-Weyl对偶及半单性结论。
We study the quantum affine superalgebra $U_q(Lsl(M,N))$ and its finite-dimensional representations. We prove a triangular decomposition and establish a system of Poincaré-Birkhoff-Witt generators for this superalgebra, both in terms of Drinfel'd currents. We define the Weyl modules in the spirit of Chari-Pressley and prove that these Weyl modules are always finite-dimensional and non-zero. In consequence, we obtain a highest weight classification of finite-dimensional simple representations when $M \neq N$. Some concrete simple representations are constructed via evaluation morphisms.
Graded representations of current Lie superalgebras $\mathfrak{sl}(1|2)[t]$
本文研究了当前李超代数 $\mathfrak{sl}(1|2)[t]$ 的有限维分次表示，定义了 super POPs 以参数化局部 Weyl 模的基，推导了其分次特征标公式，并证明 Chari-Venkatesh 模同构于广义 Kac 模的融合。
We suggest a programming realization of an algorithm for verifying a given set of algebraic relations in the form of a supercommutator multiplication table for the Verma module, which is constructed according to a generalized Cartan procedure for a quadratic superalgebra and whose elements are realized as a formal power series with respect to non-commuting elements. To this end, we propose an algebraic procedure of Verma module construction and its realization in terms of non-commuting creation and annihilation operators of a given Heisenberg--Weyl superalgebra. In doing so, we set up a proble…
Supertrace and superquadratic Lie structure on the Weyl algebra, with applications to formal inverse Weyl transform
利用Moyal *-积和正交辛超对称性，构造了Weyl代数的李超代数结构的自然非平凡超迹和相应的非退化不变超对称双线性型.我们分解了伴随作用和扭伴随作用。我们定义了一个重整化超迹和一个正式的逆Weyl变换的变形量子化框架，并开发了一些例子。
The main goal of our paper is to establish a connection between the Weyl modules of the current Lie superalgebras (twisted and untwisted) attached to $\mathfrak{osp}(1,2)$ and the nonsymmetric Macdonald polynomials of types $A_2^{(2)}$ and $A_2^{(2)\dagger}$. We compute the dimensions and construct bases of the Weyl modules. We also derive explicit formulas for the t=0 and t=\infty specializations of the nonsymmetric Macdonald polynomials. We show that the specializations can be described in terms of the Lie superalgebras action on the Weyl modules.
Defining sequences for fundamental root systems and Coxeter graphs for super Weyl groups
本文引入定义序列以描述 A–D 型经典李超代数的基本根系，并利用 Coxeter 图刻画基本经典李超代数超 Weyl 群所对应的 Coxeter 群。
Let $A_{m,n}$ be the tensor product of the polynomial algebra in $m$ even variables and the exterior algebra in $n$ odd variables over the complex field $\C$, and the Witt superalgebra $W_{m,n}$ be the Lie superalgebra of superderivations of $A_{m,n}$. In this paper, we classify the non-trivial simple bounded weight $W_{m,n}$ modules with respect to the standard Cartan algebra of $W_{m,n}$. Any such module is a simple quotient of a tensor module $F(P,L(V_1\otimes V_2))$ for a simple weight module $P$ over the Weyl superalgebra $\mathcal K_{m,n}$, a finite-dimensional simple $\gl_m$-module $V_1…
The paper aims to introduce the cyclotomic $q$-Schur superalgebra via the permutation supermodules of the cyclotomic Hekce algebra and investigate its structure. In particular, we show that the cyclotomic $q$-Schur superalgebra is a cellular superalgebra and establish the Schur-Weyl duality between the cyclotomic Hecke algebra and the cyclotomic $q$-Schur superalgebra.
Character formulas for Lie superalgebras have been shown to have important applications to number theory and combinatorics. We prove the Kac-Wakimoto character formula for the general linear Lie superalgebra gl(m|n). This formula specializes to the well-known Kac-Weyl character formula when the modules are typical and to the Weyl denominator identity when the module is trivial. We also prove a determinantal character formula for KW-modules using the Kac-Wakimoto character formula.
We obtain a realization of the Lie superalgebra $D(2, 1 ; α)$ in differential operators on the supercircle $S^{1|2}$ and in $4\times 4$ matrices over a Weyl algebra. A contraction of $D(2, 1 ; α)$ is isomorphic to the universal central extension $\hat{\p\sł}(2|2)$ of $\p\sł(2|2)$. We realize it in $4\times 4$ matrices over the associative algebra of pseudodifferential operators on $S^1$. Correspondingly, there exists a three-parameter family of irreducible representations of $\hat{\p\sł}(2|2)$ in a $(2|2)$--dimensional complex superspace.
On some representations of nilpotent Lie algebras and superalgebras
设$G$是一个单连通幂零李群，其李代数为$\gee$ .群$G$通过余伴随作用作用于对偶空间$\gee^*$。%%将$\gee^*$划分为余伴轨道。利用Kirillov的轨道方法，$G$的简单酉表示与$\gee^*$的余伴随轨道是双射对应的，而余伴随轨道又与$\gee$的泛包络代数的本原理想是双射对应的。对于$\gee$的特定子代数具有公共本征向量并且被特定本原理想$I$湮没的简单$\gee$ -模的数目由Benoist证明依赖于对应于$I$的余伴随轨道的某个子簇的几何性质。我们确定的确切数目，这样的模块时，共伴随轨道是二维的。Bell和Musson证明了由分次本原理想分解李超代数的泛包络超代数得到的代数同构于Weyl代数和Clifford代数的张量积。我们描述了某些情况下的因素是纯粹的Weyl代数，并确定这些Weyl代数的大小取决于分次本原理想。
The Grothendieck rings of finite dimensional representations of the basic classical Lie superalgebras are explicitly described in terms of the corresponding generalised root systems. We show that they can be interpreted as the subrings in the weight group rings invariant under the action of certain groupoids called Weyl groupoids.
Affine super Yangians and deformed double current superalgebras
该研究将Schur-Weyl对偶相关结果推广到特殊线性李超代数$\mathfrak{sl}_{m|n}$的超Yangian及其仿射版本，还首次提出该代数的形变双流超代数并完成同类推广。
We study a family of Siegel modular forms that are constructed using Jacobi forms that arise in Umbral moonshine. All but one of them arise as the Weyl-Kac-Borcherds denominator formula of some Borcherds-Kac-Moody (BKM) Lie superalgebras. These Lie superalgebras have a $\widehat{sl(2)}$ subalgebra which we use to study the Siegel modular forms. We show that the expansion of the Umbral Jacobi forms in terms of $\widehat{sl(2)}$ characters leads to vector-valued modular forms. We obtain closed formulae for these vector-valued modular forms. In the Lie algebraic context, the Fourier coefficients …
Quiver Hecke--Clifford superalgebras and R-matrices
本文建立了 quiver Hecke–Clifford 超代数的表示理论基础，并基于 Kwon–Lee 的构造，建立了 queer 李超代数的量子仿射类比与 A 型 quiver Hecke–Clifford 超代数之间的 Schur–Weyl 对偶。
We establish the submaximal symmetry dimension for Riemannian and Lorentzian conformal structures. The proof is based on enumerating all subalgebras of orthogonal Lie algebras of sufficiently large dimension and verifying if they stabilize a non-zero Weyl tensor up to scale. Our main technical tools include Dynkin's classification of maximal subalgebras in complex simple Lie algebras, a theorem of Mostow, and Kostant's Bott-Borel-Weil theorem.
In 1994, Kac and Wakimoto suggested a generalization of Bernstein and Leites character formula for basic Lie superalgebras, and the natural question was raised: to which simple highest weight modules does it apply? In this paper, we prove a similar formula for a large class of finite-dimensional simple modules over the Lie superalgebra gl(m|n), which we call piecewise disconnected modules, or PDC. The class of PDC modules naturally includes totally connected modules and totally disconnected modules, the two families for which similiar character formulas were proven by Su and Zhang as special c…
We introduce the orthosymplectic superalgebra osp(m|2n) as the algebra of Killing vector fields on Riemannian superspace R^{m|2n} which stabilize the origin. The Laplace operator and norm squared on R^{m|2n}, which generate sl(2), are orthosymplectically invariant, therefore we obtain the Howe dual pair (osp(m|2n),sl(2)). We study the osp(m|2n)-representation structure of the kernel of the Laplace operator. This also yields the decomposition of the supersymmetric tensor powers of the fundamental osp(m|2n)-representation under the action of sl(2) x osp(m|2n). As a side result we obtain informat…
We study the category of finite--dimensional representations for a basic classical Lie superalgebra $\Lg=\Lg_0\oplus \Lg_1$. For the ortho--symplectic Lie superalgebra $\Lg=\mathfrak{osp}(1,2n)$ we show that certain objects in that category admit a fusion flag, i.e. a sequence of graded $\Lg_0[t]$--modules such that the successive quotients are isomorphic to fusion products. Among these objects we find fusion products of finite--dimensional irreducible $\Lg$--modules, truncated Weyl modules and Demazure type modules. Moreover, we establish a presentation for these types of fusion products in t…
The invariant polynomials on simple Lie superalgebras
Chevalley定理指出，对任意有限维单李代数G（1），G上的多项式代数到Cartan子代数H上的限制同态导致G上的G-不变多项式代数与H上的W-不变多项式代数之间的同构，其中W是G的外尔群，（2）每个G-不变多项式是迹tr r（x）的幂的线性组合，其中r是G的有限维表示.这些事实对于简单李超代数都不一定成立。我们重新制定Chevalley的定理，以便拥抱李超代数。同时给出了反不变多项式的Chevalley定理。
A combinatorial proof of a Weyl type formula for hook Schur polynomials
本文给出了Hook Schur多项式的Weyl型公式的一个简单的组合证明，该公式是利用$\frak{gl}_{m|n}$的Kostant型上同调公式得到的.一般地，我们可以用组合的方法得到李超代数的各种最高权表示的Weyl型公式，这些表示与一般的线性代数构成一个Howe对偶对.
Imaginary Schur-Weyl duality for quiver Hecke superalgebras
本文研究箭图 Hecke 超代数的虚尖代数，通过构造非负分次的 Morita 等价代数 C(n,d)，将其表示论归结为经典 Schur 代数，从而用多重分拆典范分类不可约模。
Following Sen[arXiv:0911.1563], we study the counting of (`twisted') BPS states that contribute to twisted helicity trace indices in four-dimensional CHL models with N=4 supersymmetry. The generating functions of half-BPS states, twisted as well as untwisted, are given in terms of multiplicative eta products with the Mathieu group, M_{24}, playing an important role. These multiplicative eta products enable us to construct Siegel modular forms that count twisted quarter-BPS states. The square-roots of these Siegel modular forms turn out be precisely a special class of Siegel modular forms, the …
On the geometry of algebras related to the Weyl groupoid
本文研究与 Weyl 群胚相关的交换代数 $I(\mathfrak{h})$ 和 $J(G)\otimes_{\mathbb Z}\mathtt{k}$ 的代数几何，证明其在多种情形下满足 Nullstellensatz，并刻画超代数集的分解及群胚轨道结构。
Classification and double commutant property for dual pairs in an orthosymplectic Lie supergroup
本文研究了正交辛李超群中双对的分类与双共轭性质，证明了相关超代数的生成结构，并展示了如何斯对偶性的应用。
We show that the Grothendieck groups of the categories of finitely-generated graded supermodules and finitely-generated projective graded supermodules over a tower of graded superalgebras satisfying certain natural conditions give rise to twisted Hopf algebras that are twisted dual. Then, using induction and restriction functors coming from such towers, we obtain a categorification of the twisted Heisenberg double and its Fock space representation. We show that towers of wreath product algebras (in particular, the tower of Sergeev superalgebras) and the tower of nilcoxeter graded superalgebras…
In this paper, a notion of cyclotomic (or level $k$) walled Brauer algebras $\mathscr B_{k, r, t}$ is introduced for arbitrary positive integer $k$. It is proven that $\mathscr B_{k, r, t}$ is free over a commutative ring with rank $k^{r+t}(r+t)!$ if and only if it is admissible. Using super Schur-Weyl duality between general linear Lie superalgebras $\mathfrak{gl}_{m|n}$ and $\mathscr B_{2, r, t}$, we give a classification of highest weight vectors of $\mathfrak{gl}_{m|n}$-modules $M_{pq}^{rt}$, the tensor products of Kac-modules with mixed tensor products of the natural module and its dual. …
In recent work, we examined the algebraic structure underlying a class of elements supercommuting with realization of the Lie superalgebra $\mathfrak{osp}(1|2)$ inside a generalization of the Weyl Clifford algebra. This generalization contained in particular the deformation by means of Dunkl operators, yielding a rational Cherednik algebra instead of the Weyl algebra. The aim of this work is to show that this is the full supercentralizer, give a (minimal) set of generators, and to describe the relation with the $(\mathrm{Pin}(d),\mathfrak{osp}(2m+1|2n))$ Howe dual pair.
We study realisations of Lie (super)algebras in Weyl (super)algebras and connections with minimal representations. The main result is the construction of small realisations of Lie superalgebras, which we apply for two distinct purposes. Firstly it naturally introduces, and generalises, the Bessel operators for Jordan algebras in the study of minimal representations of simple Lie groups. These have already been applied very successfully by several authors, however an easy direct explanation for their relevance seemed still to be missing. Secondly, we work out the theoretical realisation concret…
We investigate an algebraic model for the quantum oscillator based upon the Lie superalgebra sh(2|2), known as the Heisenberg-Weyl superalgebra or "the algebra of supersymmetric quantum mechanics", and its Fock representation. The model offers some freedom in the choice of a position and a momentum operator, leading to a free model parameter gamma. Using the technique of Jacobi matrices, we determine the spectrum of the position operator, and show that its wavefunctions are related to Charlier polynomials C_n with parameter gamma^2. Some properties of these wavefunctions are discussed, as well…
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