Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Julian Sonner"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-60 (2024)
Abstract A key issue in both the field of quantum chaos and quantum gravity is an effective description of chaotic conformal field theories (CFTs), that is CFTs that have a quantum ergodic limit. We develop a framework incorporating the constraints o
Externí odkaz:
https://doaj.org/article/680cdc68457e481dbecaa6824a0e2c0f
Autor:
Pietro Pelliconi, Julian Sonner
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-44 (2024)
Abstract Open quantum systems are defined as ordinary unitary quantum theories coupled to a set of external degrees of freedom, which are introduced to take on the rôle of an unobserved environment. Here we study examples of open quantum field theor
Externí odkaz:
https://doaj.org/article/010c8268480945eb9f451222cf61e02b
Autor:
Alexander Altland, Kun Woo Kim, Tobias Micklitz, Maedeh Rezaei, Julian Sonner, Jacobus J. M. Verbaarschot
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033286 (2024)
Recently, the physics of many-body quantum chaotic systems close to their ground states has come under intensified scrutiny. Such studies are motivated by the emergence of model systems exhibiting chaotic fluctuations throughout the entire spectrum [
Externí odkaz:
https://doaj.org/article/993cb15b72464ef697008bd07468012f
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 11, Pp 1-38 (2022)
Abstract The spectral form factor is a powerful probe of quantum chaos that diagnoses the statistics of energy levels, but is blind to other features of a theory such as matrix elements of operators or OPE coefficients in conformal field theories. In
Externí odkaz:
https://doaj.org/article/31ae85ea23cd425b8e98aa7f1ea78b89
Publikováno v:
Physical Review X, Vol 13, Iss 3, p 031033 (2023)
We develop a class of matrix models that implement and formalize the eigenstate thermalization hypothesis (ETH) and point out that, in general, these models must contain non-Gaussian corrections in order to correctly capture thermal mean-field theory
Externí odkaz:
https://doaj.org/article/bfcb7b18c84841d6846a778f607ae324
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 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:
Journal of High Energy Physics, Vol 2020, Iss 3, Pp 1-40 (2020)
Abstract In this paper we provide a universal description of the behavior of the basic operators of the Schwarzian theory in pure states. When the pure states are energy eigenstates, expectation values of non-extensive operators are thermal. On the o
Externí odkaz:
https://doaj.org/article/64c4b8bf2895445cb25401abf08c3ce6
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-24 (2019)
Abstract The Sachdev-Ye-Kitaev (SYK) model provides an uncommon example of a chaotic theory that can be analysed analytically. In the deep infrared limit, the original model has an emergent conformal (reparametrisation) symmetry that is broken both s
Externí odkaz:
https://doaj.org/article/f6986a994f2f441386b6d605fd0be177
Publikováno v:
Physical Review Research, Vol 3, Iss 3, p 033259 (2021)
For a generic quantum many-body system, the quantum ergodic regime is defined as the limit in which the spectrum of the system resembles that of a random matrix theory (RMT) in the corresponding symmetry class. In this paper, we analyze the time depe
Externí odkaz:
https://doaj.org/article/f25008ebaac64116ad741f978dd53f19