Zobrazeno 1 - 10
of 712
pro vyhledávání: '"Hartman, Thomas"'
Autor:
Hartman, Thomas, Mathys, Grégoire
In a four-dimensional quantum field theory that flows between two fixed points under the renormalization group, the change in the conformal anomaly $\Delta a$ has been related to the average null energy. We extend this result to derive a sum rule for
Externí odkaz:
http://arxiv.org/abs/2405.10137
Black holes and wormholes in the gravitational path integral can be used to calculate the statistics of heavy operators. An explicit example in higher dimensions is provided by thin shells of matter. We study these solutions in 3D gravity, and reprod
Externí odkaz:
http://arxiv.org/abs/2404.15183
Autor:
Hartman, Thomas, Mathys, Grégoire
We study applications of spectral positivity and the averaged null energy condition (ANEC) to renormalization group (RG) flows in two-dimensional quantum field theory. We find a succinct new proof of the Zamolodchikov $c$-theorem, and derive further
Externí odkaz:
http://arxiv.org/abs/2310.15217
Autor:
Hartman, Thomas, Mathys, Grégoire
We establish a connection between the averaged null energy condition (ANEC) and the monotonicity of the renormalization group, by studying the light-ray operator $\int du T_{uu}$ in quantum field theories that flow between two conformal fixed points.
Externí odkaz:
http://arxiv.org/abs/2309.14409
Autor:
Chua, Wan Zhen, Hartman, Thomas
We consider the problem of defining a microcanonical thermofield double state at fixed energy and angular momentum from the gravitational path integral. A semiclassical approximation to this state is obtained by imposing a mixed boundary condition on
Externí odkaz:
http://arxiv.org/abs/2309.05041
Autor:
Chandra, Jeevan, Hartman, Thomas
In holographic CFTs satisfying eigenstate thermalization, there is a regime where the operator product expansion can be approximated by a random tensor network. The geometry of the tensor network corresponds to a spatial slice in the holographic dual
Externí odkaz:
http://arxiv.org/abs/2302.02446
The focusing theorem in General Relativity underlies causality, singularity theorems, entropy inequalities, and more. In AdS/CFT, we show that focusing in the bulk leads to a bound on CFT $n$-point functions that is generally stronger than causality.
Externí odkaz:
http://arxiv.org/abs/2212.01942
Autor:
Catterall, Simon, Harnik, Roni, Hubeny, Veronika E., Bauer, Christian W., Berlin, Asher, Davoudi, Zohreh, Faulkner, Thomas, Hartman, Thomas, Headrick, Matthew, Kahn, Yonatan F., Lamm, Henry, Meurice, Yannick, Rajendran, Surjeet, Rangamani, Mukund, Swingle, Brian
We summarize current and future applications of quantum information science to theoretical high energy physics. Three main themes are identified and discussed; quantum simulation, quantum sensors and formal aspects of the connection between quantum i
Externí odkaz:
http://arxiv.org/abs/2209.14839
Autor:
Chandra, Jeevan, Hartman, Thomas
We construct new Euclidean wormhole solutions in AdS(d+1) and discuss their role in UV-complete theories, without ensemble averaging. The geometries are interpreted as overlaps of GHZ-like entangled states, which arise naturally from coarse graining
Externí odkaz:
http://arxiv.org/abs/2206.03414
We present a summary of recent progress and remaining challenges in applying the methods and ideas of quantum information theory to the study of quantum field theory and quantum gravity. Important topics and themes include: entanglement entropy in QF
Externí odkaz:
http://arxiv.org/abs/2203.07117