There are explored off-diagonal deformations of "prime" metrics in Einstein gravity (for instance, for wormhole configurations) into "target" exact solutions in f(R,T)-modified and massive/ bi-metric gravity theories. The new classes of solutions may posses, or not, Killing symmetries and can be characterized by effective induced masses, anisotropic polarized interactions and cosmological constants. For nonholonomic deformations with (conformal) ellipsoid/ toroid and/or solitonic symmetries and, in particular, for small eccentricity rotoid configurations, we can generate wormholes like objects matching external black ellipsoid - de Sitter geometries. We conclude that there are nonholonomic transforms and/or non-trivial limits to exact solutions in general relativity when modified/ massive gravity effects are modeled by off-diagonal and/or nonholonomic parametric interactions.
Traversable wormhole with double trace deformations via gravitational shear and sound channels
Institut Teknologi Bandung（万隆理工学院）；National Research and Innovation Agency (BRIN)（国家研究与创新署）；Asia Pacific Center for Theoretical Physics, Pohang University of Science and Technology（韩国科学技术院亚太理论物理中心）；Indonesia Center for Theoretical and Mathematical Physics (ICTMP), Institut Teknologi Bandung（万隆理工学院印尼理论与数学物理中心）
Second-order slow rotation of wormholes in Einstein-scalar-Gauss-Bonnet gravity
New Uzbekistan University（新乌兹别克斯坦大学）；Tashkent State Technical University（塔什干国立技术大学）；Institute of Theoretical Physics, National University of Uzbekistan（乌兹别克斯坦国立大学理论物理研究所）；School of Physics, Harbin Institute of Technology（哈尔滨工业大学物理学院）
Rotating traversable wormholes and particle dynamics in $f(R,T)$ gravity
The British University in Egypt（埃及英国大学）；North-West University（西北大学）；National Institute for Theoretical and Computational Sciences (NITheCS)（国家理论与计算科学研究所）；Fukushima University（福岛大学）；National Observatory of Athens（雅典国家天文台）；Universidad Católica del Norte（北天主教学会大学）；University of Science and Technology of China（中国科学技术大学）
Distinguishing rotating naked singularities from Kerr-like wormholes by their deflection angles of massive particles
我们利用Janis-Newman-Winicour（JNW）时空（也称为具有类表面裸奇点的旋转源）和旋转Kerr类虫洞研究了相对论性大质量粒子的引力偏转。根据最近的文章[K。Jusufi，Phys. Rev. D 98，064017（2018）]，我们通过探索裸奇点和类克尔物体对粒子偏转的影响来扩展其中的一些结果。我们首先引入坐标变换，得到各向同性线元，它给出了相应光学介质的光的折射率。另一方面，通过将大质量粒子视为德布罗意波包，可以得到大质量粒子的折射率。为此，我们应用高斯-博内定理的各向同性光学度量找到偏转角。我们的分析表明，在JNW时空中，变形参数$0<γ<1$对偏转角有影响;同样，在Kerr类虫洞中，变形参数$λ$对偏转角也有影响.此外，我们提出了一个详细的分析的偏转角的Hamilton-Jacobi方程，导致相同的结果。作为结果的特例，恢复了光的偏转角.最后，我们指出，Kerr类虫洞的粒子偏转比JNW时空更强，特别是这种差异可以用来从观测的角度揭示一些光，以区分这两个时空。
From massless wormholes to massive black bounces: Shadows and multiple light rings
Universidade Federal do Ceará（塞阿拉联邦大学）；Center of Gravitation and Fundamental Metrology, Rostest（引力与基本计量中心，罗斯特斯特）；Peoples’ Friendship University of Russia（俄罗斯人民友谊大学）；National Research Nuclear University ”MEPhI”（国立核研究大学莫斯科工程物理学院）
Black hole and wormhole branches in gravitational decoupling
Universidad de La Frontera（弗龙特拉大学）；Universidad Católica del Norte（北天主教大学）；Shanghai Institute for Advanced Studies（上海高等研究院）；University of Science and Technology of China（中国科学技术大学）；Herzen State Pedagogical University of Russia（俄罗斯赫尔岑国立教育大学）；Khazar University（哈扎尔大学）；SAO RAS（俄罗斯科学院特别天体物理观测台）；Pontificia Universidad Católica de Valparaíso（瓦爾帕萊索天主教大學）
The Anholonomic Frame and Connection Deformation Method for constructing off-diagonal solutions in (modified) Einstein gravity and nonassociative geometric flows and Finsler-Lagrange-Hamilton theories
C-infinity Compact-Support Wormholes with Exact Schwarzschild Exterior in Trace-Coupled Gravity
National University of Computer and Emerging Sciences（国立计算机与新兴科学大学）；Center for Theoretical Physics, Khazar University（哈扎尔大学理论物理中心）；School of Computing and Mathematical Sciences, University of Leicester（莱斯特大学计算与数学科学学院）；Department of Physics, College of Sciences, Princess Nourah bint Abdulrahman University（公主努拉·宾特·阿卜杜勒拉赫曼大学理学院物理学系）
