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相关论文: Wormhole calculus without averaging from $O(N)^{q-…

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We study the geometry of a wormhole spacetime filled with anisotropic matter in the context of general relativity. In the course of the study, new static and spherically symmetric solutions, analytic and numerical ones, are found. We…

广义相对论与量子宇宙学 · 物理学 2019-09-04 Hyeong-Chan Kim , Youngone Lee

Motivated by SYK-like models describing near-BPS black holes in string/M-theory, we consider gauging the U$(1)$ symmetry of the complex SYK model in the presence of a Wilson line with charge $k$. At a fixed background gauge field, solutions…

高能物理 - 理论 · 物理学 2025-10-10 Ziruo Zhang , Cheng Peng

We study how coarse-graining procedure of an underlying UV-complete quantum gravity gives rise to a connected geometry. It has been shown, quantum entanglement plays a key role in the emergence of such a geometric structure, namely a smooth…

高能物理 - 理论 · 物理学 2021-11-10 Kanato Goto , Yuya Kusuki , Kotaro Tamaoka , Tomonori Ugajin

Within 2+1-dimensional cosmological new massive gravity, we consider thin-shell and thin-shell wormhole construction. For this, we introduce first, the junction conditions apt for the fourth order terms in the action of the theory. Then, by…

广义相对论与量子宇宙学 · 物理学 2019-06-04 S. Danial Forghani , S. Habib Mazharimousavi , M. Halilsoy

We explore wormhole solutions in a non-minimal torsion-matter coupled gravity by taking an explicit non-minimal coupling between the matter Lagrangian density and an arbitrary function of torsion scalar. This coupling depicts the transfer…

广义相对论与量子宇宙学 · 物理学 2017-02-01 Abdul Jawad , Shamaila Rani

We study a tunneling geometry defined by a single point-contact constriction that brings to close vicinity two points sitting at the same edge of a quantum Hall liquid, shortening the trip between the otherwise spatially separated points…

介观与纳米尺度物理 · 物理学 2009-11-11 Chang-Yu Hou , Claudio Chamon

At small lattice spacing, or when using overlap fermions, lattice QCD simulations tend to become stuck in a single topological sector. Physical observables, e.g.\ hadron masses, then differ from their full QCD counterparts by $1/V$…

高能物理 - 格点 · 物理学 2014-10-03 Christopher Czaban , Arthur Dromard , Marc Wagner

In this article, new wormhole solutions in the framework of General Relativity are presented. Taking advantage of gravitational decoupling by means of minimal geometric deformation approach and, the so-called noncommutative geometry…

广义相对论与量子宇宙学 · 物理学 2023-06-02 Francisco Tello-Ortiz , B. Mishra , A. Alvarez , Ksh. Newton Singh

A fundamental ingredient in wormhole physics is the presence of exotic matter, which involves the violation of the null energy condition. Although a plethora of wormhole solutions have been explored in the literature, it is useful to find…

广义相对论与量子宇宙学 · 物理学 2015-05-28 Nadiezhda Montelongo Garcia , Francisco S. N. Lobo

We investigate traversable wormhole geometries in the framework of $F(T)$ gravity supplemented by a weak de Rham-Gabadadze-Tolley (dRGT) massive term. Using the static and spherically symmetric Morris-Thorne metric, we derive the field and…

广义相对论与量子宇宙学 · 物理学 2025-11-19 Alexandre Landry , Yassine Sekhmani , Sunil K Maurya , Akram Ali , Emmanuel N. Saridakis

A traversable wormhole generally violates the averaged null energy condition, usually requiring exotic matter. Recently, it has been found that the traversable wormhole can be realized by non-exotic matter in Einstein-Dirac-Maxwell theories…

高能物理 - 理论 · 物理学 2025-03-06 Hua-Chao Liu , Rong-Xin Miao

Wormholes are tunnels connecting two different points in space-time. In Einstein's General Relativity theory, wormholes are expected to be filled by exotic matter, i.e., matter that does not satisfy the energy conditions and may have…

广义相对论与量子宇宙学 · 物理学 2018-01-17 P. H. R. S. Moraes , P. K. Sahoo

We study solutions obtained via applying dualities and complexifications to the vacuum Weyl metrics generated by massive rods and by point masses. Rescaling them and extending to complex parameter values yields axially symmetric vacuum…

高能物理 - 理论 · 物理学 2017-05-31 Gary W. Gibbons , Mikhail S. Volkov

In this work, we explore asymptotically flat charged thin-shell wormholes of third order Lovelock gravity in higher dimensions, taking into account the cut-and-paste technique. Using the generalized junction conditions, we determine the…

广义相对论与量子宇宙学 · 物理学 2015-08-19 Mohammad Reza Mehdizadeh , Mahdi Kord Zangeneh , Francisco S. N. Lobo

We construct the asymptotically flat charged thin-shell wormholes of Lovelock gravity in seven dimensions by cut-and-paste technique, and apply the generalized junction conditions in order to calculate the energy-momentum tensor of these…

广义相对论与量子宇宙学 · 物理学 2012-02-10 M. H. Dehghani , M. R. Mehdizadeh

Noncommutative geometry, an offshoot of string theory, replaces point-like particles by smeared objects. These local effects have led to wormhole solutions in a semiclassical setting, but it has also been claimed that the noncommutative…

广义相对论与量子宇宙学 · 物理学 2024-12-24 Peter K. F. Kuhfittig

The space-time reduced model of large N QCD with two adjoint Wilson fermions is constructed by applying the symmetric twist boundary conditions with non-vanishing flux $k$. For large but finite $N=L^2$, the model should behave as the large…

高能物理 - 格点 · 物理学 2013-08-09 Antonio González-Arroyo , Masanori Okawa

Following the recent theory of $f(Q)$ gravity, we continue to investigate the possible existence of wormhole geometries, where $Q$ is the non-metricity scalar. Recently, the non-metricity scalar and the corresponding field equations have…

广义相对论与量子宇宙学 · 物理学 2021-12-08 Ayan Banerjee , Anirudh Pradhan , Takol Tangphati , Farook Rahaman

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

This article is based on the study of wormhole geometries in the context of symmetric teleparallel gravity or $f(Q)$ gravity, where $Q$ is the non-metricity scalar, and it is responsible for the gravitational interaction. To discuss the…

广义相对论与量子宇宙学 · 物理学 2022-01-11 G. Mustafa , Zinnat Hassan , P. K. Sahoo