Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Benjamin Withers"'
Autor:
Javier Carballo, Benjamin Withers
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-39 (2024)
Abstract Quasinormal modes of spacetimes with event horizons are typically governed by a non-normal operator. This gives rise to spectral instabilities, a topic of recent interest in the black hole pseudospectrum programme. In this work we show that
Externí odkaz:
https://doaj.org/article/56c4df7519d746edb45b93f8fd6b3148
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-76 (2024)
Abstract We present a new formalism to solve the kinematical constraints due to Weyl invariance for CFTs in curved backgrounds and/or non-trivial states, and we apply it to thermal CFTs and to CFTs on squashed spheres. The ambient space formalism is
Externí odkaz:
https://doaj.org/article/aa32df1c82dc455f86af077c361c5af4
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-21 (2024)
Abstract We prepare an excited finite temperature state in N $$ \mathcal{N} $$ = 4 SYM by means of a Euclidean path integral with a relevant deformation. The deformation explicitly breaks imaginary-time translations along the thermal circle whilst pr
Externí odkaz:
https://doaj.org/article/d5f87a901fec4052960148cfc0df1412
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 4, Pp 1-22 (2023)
Abstract We compute fully retarded scalar three-point functions of holographic CFTs at finite temperature using real-time holography. They describe the nonlinear response of a holographic medium under scalar forcing, and display single and higher-ord
Externí odkaz:
https://doaj.org/article/f36fe37a30644128b074950d78e4847c
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-16 (2021)
Abstract General relativity governs the nonlinear dynamics of spacetime, including black holes and their event horizons. We demonstrate that forced black hole horizons exhibit statistically steady turbulent spacetime dynamics consistent with Kolmogor
Externí odkaz:
https://doaj.org/article/2c2f9db95c114833af1d42cf73dfb98f
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-38 (2021)
Abstract The large proper-time behaviour of expanding boost-invariant fluids has provided many crucial insights into quark-gluon plasma dynamics. Here we formulate and explore the late-time behaviour of nonequilibrium dynamics at the level of lineari
Externí odkaz:
https://doaj.org/article/aea6ef07013f411eb74ffec3f42baac9
Autor:
Alexandre Belin, Benjamin Withers
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 12, Pp 1-20 (2020)
Abstract A common method to prepare states in AdS/CFT is to perform the Euclidean path integral with sources turned on for single-trace operators. These states can be interpreted as coherent states of the bulk quantum theory associated to Lorentzian
Externí odkaz:
https://doaj.org/article/43ccbb95ec8b48889805112f4fc9f27e
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-26 (2020)
Abstract We construct the general first-order hydrodynamic theory invariant under time translations, the Euclidean group of spatial transformations and preserving particle number, that is with symmetry group ℝ t ×ISO(d)×U(1). Such theories are im
Externí odkaz:
https://doaj.org/article/86324f6efbef4b35a31aceb66b75d3cc
Publikováno v:
Physical Review X, Vol 12, Iss 4, p 041010 (2022)
There is growing evidence that the hydrodynamic gradient expansion is factorially divergent. We advocate for using Dingle’s singulants as a way to gain analytic control over its large-order behavior for nonlinear flows. Within our approach, singula
Externí odkaz:
https://doaj.org/article/7fa25f96cb914dbfba9e3037b8d5fa34
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 9, Pp 1-27 (2018)
Abstract We consider Einstein gravity in AdS in the presence of a deformed conformal boundary metric, in the limit of large spacetime dimension. At leading order we find a new set of effective near-horizon equations. These can be understood as covari
Externí odkaz:
https://doaj.org/article/dd93899f1a504cdab0f5c8161ee5e81a