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arXiv 0901.1730quant-phcond-mat.stat-mechmath-phmath.MP
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赝厄米Dicke模型中的量子相变

Quantum Phase Transition in a Pseudo-hermitian Dicke model

Tetsuo Deguchi, Pijush K. Ghosh

摘要:

通过相似变换将Dicke型赝厄米哈密顿量映射到“Dressed Dicke模型”,证明了Dicke型赝厄米哈密顿量经历量子相变.我们发现正定度规在希尔伯特空间的伪厄米哈密顿量,使它是酉的,并允许一个一致的量子描述。进一步,我们得到了伪厄米哈密顿量精确可解的极限。

英文摘要:

We show that a Dicke-type pseudo-hermitian Hamiltonian undergoes quantum phase transition by mapping it to the "Dressed Dicke Model" through a similarity transformation. We find the positive-definite metric in the Hilbert space of the pseudo-hermitian Hamiltonian so that it is unitary and allows a consistent quantum description. Further, we obtain the limit in which the pseudo-hermitian Hamiltonian is exactly solvable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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