Results 21 to 30 of about 21,065,962 (295)

Thermalization and chaos in a 1+1d QFT

Journal of High Energy Physics, 2023
We study aspects of chaos and thermodynamics at strong coupling in a scalar model using LCT numerical methods. We find that our eigenstate spectrum satisfies Wigner-Dyson statistics and that the coefficients describing eigenstates in our basis satisfy ...
Luca V. Delacrétaz, A. Liam Fitzpatrick, Emanuel Katz, Matthew T. Walters   +3 more
doaj   +1 more source

Extending the thermodynamic form factor bootstrap program: multiple particle-hole excitations, crossing symmetry, and reparameterization invariance

Journal of High Energy Physics, 2023
In this study, we further the thermodynamic bootstrap program which involves a set of recently developed ideas used to determine thermodynamic form factors of local operators in integrable quantum field theories. These form factors are essential building
Miłosz Panfil, Robert M. Konik
doaj   +1 more source

Entanglement negativity and entropy in non-equilibrium conformal field theory

Nuclear Physics B, 2015
We study the dynamics of the entanglement in one-dimensional critical quantum systems after a local quench in which two independently thermalized semi-infinite halves are joined to form a homogeneous infinite system and left to evolve unitarily.
Marianne Hoogeveen, Benjamin Doyon
doaj   +1 more source

Problems of perturbation series in non-equilibrium quantum field theories [PDF]

Physics Letters B, 1994
10 pages, 2 figures, Cern preprint CERN-TH.7271 ...
Altherr, T., Seibert, D.
openaire   +2 more sources

Thermal three-point functions from holographic Schwinger-Keldysh contours

Journal of High Energy Physics, 2023
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-order poles ...
Christiana Pantelidou, Benjamin Withers
doaj   +1 more source

Cumulants in perturbation expansions for non-equilibrium field theory [PDF]

Nuclear Physics A, 1996
Abstract The formulation of perturbation expansions for a quantum field theory of strongly interacting systems in a general non-equilibrium state is discussed. Non-vanishing initial correlations are included in the formulation of the perturbation expansion in terms of cumulants.
R. Fauser, H.H. Wolter
openaire   +1 more source

An intuitive construction of modular flow

Journal of High Energy Physics, 2023
The theory of modular flow has proved extremely useful for applying thermodynamic reasoning to out-of-equilibrium states in quantum field theory. However, the standard proofs of the fundamental theorems of modular flow use machinery from Fourier analysis
Jonathan Sorce
doaj   +1 more source

Quantum Mechanics and Quantum Field Theory: Algebraic and Geometric Approaches

, 2023
This is a non-standard exposition of the main notions of quantum mechanics and quantum field theory, including recent results. It is based on the algebraic approach in which the starting point is a star-algebra and on the geometric approach in which the ...
Igor Frolov, Albert Schwarz
core   +1 more source

Effective field theory out of equilibrium: Brownian quantum fields

New Journal of Physics, 2015
The emergence of an effective field theory out of equilibrium is studied in the case in which a light field—the system—interacts with very heavy fields in a finite temperature bath.
D Boyanovsky
doaj   +1 more source

Quantum critical phase of FeO spans conditions of Earth’s lower mantle

Nature Communications
Seismic and mineralogical studies have suggested regions at Earth’s core-mantle boundary may be highly enriched in FeO, reported to exhibit metallic behavior at extreme pressure-temperature (P–T) conditions.
Wai-Ga D. Ho, Peng Zhang, Kristjan Haule, Jennifer M. Jackson, Vladimir Dobrosavljević, Vasilije V. Dobrosavljevic   +5 more
doaj   +1 more source