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相关论文: Rotating traversable wormholes in AdS

200 篇论文

This paper examines the effects of charge on traversable wormhole structure in $f(R,T)$ theory. For this purpose, we use the embedding class-I approach to build a wormhole shape function from the static spherically symmetric spacetime. The…

广义相对论与量子宇宙学 · 物理学 2023-08-21 M. Sharif , Arooj Fatima

In classical thermodynamics, heat cannot spontaneously pass from a colder system to a hotter system, which is called the thermodynamic arrow of time. However, if the initial states are entangled, the direction of the thermodynamic arrow of…

高能物理 - 理论 · 物理学 2020-10-27 Zhuo-Yu Xian , Long Zhao

We investigate how changes in the boundary metric affect the shape of AdS black holes. Most of our work is analytic and based on the AdS C-metric. Both asymptotically hyperbolic and compact black holes are studied. It has recently been…

高能物理 - 理论 · 物理学 2018-12-05 Gary T. Horowitz , Jorge E. Santos , Chiara Toldo

We compare the effects of Noncommutative Geometry and Gravity's Rainbow on traversable wormholes which are sustained by their own gravitational quantum fluctuations. Fixing the geometry on a well tested model, we find that the final result…

广义相对论与量子宇宙学 · 物理学 2017-03-22 Remo Garattini

We discuss rotating wormholes in general relativity with a scalar field with negative kinetic energy. To solve the problem, we use the assumption about slow rotation. The role of a small dimensionless parameter plays the ratio of the linear…

广义相对论与量子宇宙学 · 物理学 2008-11-26 P. E. Kashargin , S. V. Sushkov

Folding of the triangular lattice in a discrete three-dimensional space is investigated by means of the transfer-matrix method. This model was introduced by Bowick and co-workers as a discretized version of the polymerized membrane in…

统计力学 · 物理学 2015-05-18 Yoshihiro Nishiyama

We study thermalization on rotating probe branes in AdS_5 x S^5 background in the presence of constant external electric and magnetic fields. In the AdS/CFT framework this corresponds to thermalization in the flavour sector in field theory.…

高能物理 - 理论 · 物理学 2015-06-16 M. Ali-Akbari , H. Ebrahim , Z. Rezaei

In this work, we analyze the thermodynamic properties of non--interacting particles under influence of the gravitational field of a traversable wormhole. In particular, we investigate how the thermodynamic quantities are affected by the…

广义相对论与量子宇宙学 · 物理学 2024-06-10 A. A. Araújo Filho , J. Furtado , J. A. A. S. Reis , J. E. G. Silva

Certain AdS black holes in the STU model can be conformally scaled to wormhole and black hole solutions of an f(R) type theory which have two asymptotically AdS regions and are completely free of curvature singularities. While there is a…

高能物理 - 理论 · 物理学 2015-06-17 H. Lu , Justin F. Vazquez-Poritz , Zhibai Zhang

It is considered in this work the phase transition patterns for a coupled two-scalar field system model under the combined effects of finite sizes and temperature. The scalar fields are taken as propagating in a D=4 Euclidean space with the…

高能物理 - 唯象学 · 物理学 2023-03-30 Lucas G. Câmara , Rudnei O. Ramos

Temperature and angular momentum dependence of the quadrupole deformation is studied in the middle of the sd-shell for 28Si and 27Si isotopes using the spherical shell model approach. The shell model calculations have been performed using…

核理论 · 物理学 2010-11-02 P. A. Ganai , J. A. Sheikh , I. Maqbool , R. P. Singh

Jamming crossovers occur at zero temperature in assemblies of particles interacting via finite range repulsive potentials, when on increasing the density particles make contacts with those of subsequent coordination shells. Density…

软凝聚态物质 · 物理学 2013-09-03 Massimo Pica Ciamarra , Peter Sollich

At low Reynolds numbers, the hydrodynamic interaction between dumbbells driven by an external rotating field can be attractive or repulsive. Dumbbells of dissimilar asymmetric shape or different coupling to the external field undergo…

流体动力学 · 物理学 2015-05-18 Steffen Schreiber , Thomas Fischer , Walter Zimmermann

In this paper, we explore wormhole solutions in a higher-derivative theory of gravity where the action depends not only on the Ricci scalar \(R\), but also on its d'Alembertian, \(\Box R\). Such \(f(R,\Box R)\) models are motivated by…

广义相对论与量子宇宙学 · 物理学 2026-05-19 M Daniel Ranjan , Soumya Chakrabarti , Sanjit Das

We study the thermal fluctuations of vortex positions in small vortex clusters in a harmonically trapped rotating Bose-Einstein condensate. It is shown that the order-disorder transition of two-shells clusters occurs via the decoupling of…

统计力学 · 物理学 2009-11-11 W. V. Pogosov , K. Machida

The conditions of the traversable wormhole joining with the exterior space-time are considered in details and the mixed boundary problem for the Einstein equations is formulated. It is shown that, in opposite to some declarations, the…

广义相对论与量子宇宙学 · 物理学 2007-05-23 M. Yu. Konstantinov

We present results of Monte Carlo simulations, using parallel tempering, on the three- and four-dimensional Edwards-Anderson Ising spin glass with Gaussian couplings at low temperatures with free boundary conditions. Our results suggest…

无序系统与神经网络 · 物理学 2007-05-23 Helmut G. Katzgraber , A. P. Young

In this paper, we study the Lorentzian AdS wormhole solutions constructed in arXiv:0808.2481 [hep-th]. Each of them is a classical solution interpolating between an AdS space and a flat space in type IIB supergravity. We calculate the…

高能物理 - 理论 · 物理学 2015-05-28 Mitsutoshi Fujita , Yasuyuki Hatsuda , Tadashi Takayanagi

We study extremal surfaces in a traversable wormhole geometry that connects two locally AdS$_5$ asymptotic regions. In the context of the AdS/CFT correspondence, we use these to compute the holographic entanglement entropy for different…

高能物理 - 理论 · 物理学 2022-07-04 Mariano Chernicoff , Gaston Giribet , Emilio Rubín de Celis

We present extensive molecular dynamics simulations of a liquid of symmetric dumbbells, for constant packing fraction, as a function of temperature and molecular elongation. For large elongations, translational and rotational degrees of…

软凝聚态物质 · 物理学 2009-11-11 Angel J. Moreno , Song-Ho Chong , Walter Kob , Francesco Sciortino