Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Wang, Zhencheng"'
Gravitational R\'enyi computations have traditionally been described in the language of Euclidean path integrals. In the semiclassical limit, such calculations are governed by Euclidean (or, more generally, complex) saddle-point geometries. We emphas
Externí odkaz:
http://arxiv.org/abs/2409.17428
Spacetime wormholes can provide non-perturbative contributions to the gravitational path integral that make the actual number of states $e^S$ in a gravitational system much smaller than the number of states $e^{S_{\mathrm{p}}}$ predicted by perturbat
Externí odkaz:
http://arxiv.org/abs/2405.04571
Recent works by Chandrasekaran, Penington, and Witten have shown in various special contexts that the quantum-corrected Ryu-Takayanagi (RT) entropy (or its covariant Hubeny-Rangamani-Takayanagi (HRT) generalization) can be understood as computing an
Externí odkaz:
http://arxiv.org/abs/2310.02189
A trace inequality for Euclidean gravitational path integrals (and a new positive action conjecture)
The AdS/CFT correspondence states that certain conformal field theories are equivalent to string theories in a higher-dimensional anti-de Sitter space. One aspect of the correspondence is an equivalence of density matrices or, if one ignores normaliz
Externí odkaz:
http://arxiv.org/abs/2309.02497
The concept of fixed-area states has proven useful for recent studies of quantum gravity, especially in connection with gravitational holography. We explore the Lorentz-signature spacetime geometry intrinsic to such fixed-area states in this paper. T
Externí odkaz:
http://arxiv.org/abs/2203.04973
Autor:
Maxfield, Henry, Wang, Zhencheng
In the AdS/CFT correspondence, single trace operators of large-$N$ gauge theories at large spin $J$ can be described by classical spinning strings, giving a geometric and classical description of their spectrum at strong coupling. We observe that in
Externí odkaz:
http://arxiv.org/abs/2203.02492
Autor:
Marolf, Donald, Wang, Zhencheng
The Hubeny-Rangamani-Takayanagi surface $\gamma_{HRT}$ computing the entropy $S(D)$ of a domain of dependence $D$ on an asymptotically AdS boundary is known to be causally inaccessible from $D$. We generalize this gravitational result to higher repli
Externí odkaz:
http://arxiv.org/abs/2106.07835
We continue the study of real-time replica wormholes initiated in arXiv:2012.00828. Previously, we had discussed the general principles and had outlined a variational principle for obtaining stationary points of the real-time gravitational path integ
Externí odkaz:
http://arxiv.org/abs/2105.07002
We generalize the Gao-Jafferis-Wall construction of traversable two-sided wormholes to multi-boundary wormholes. In our construction, we take the background spacetime to be multi-boundary black holes in AdS$_3$. We work in the hot limit where the dua
Externí odkaz:
http://arxiv.org/abs/2012.04635
This work is the first step in a two-part investigation of real-time replica wormholes. Here we study the associated real-time gravitational path integral and construct the variational principle that will define its saddle-points. We also describe th
Externí odkaz:
http://arxiv.org/abs/2012.00828