Holographic complexity of quantum black holes
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2022)204
Abstract: We analyze different holographic complexity proposals for black holes that include corrections from bulk quantum fields. The specific setup is the quantum BTZ black hole, which encompasses in an exact manner the effects of conformal… read more here.
Keywords: complexity quantum; black holes; complexity; quantum fields ... See more keywords
Effective entropy of quantum fields coupled with gravity
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2020)052
Abstract: Entanglement entropy quantifies the amount of uncertainty of a quantum state. For quantum fields in curved space, entanglement entropy of the quantum field theory degrees of freedom is well-defined for a fixed background geometry. In… read more here.
Keywords: quantum; entropy; entropy quantum; geometry ... See more keywords
The entropy of bulk quantum fields and the entanglement wedge of an evaporating black hole
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep12(2019)063
Abstract: Abstract Bulk quantum fields are often said to contribute to the generalized entropy $$ \frac{A}{4{G}_N}+{S}_{\mathrm{bulk}} $$ A 4 G N + S bulk only at O(1). Nonetheless, in the context of evaporating black holes, O(1/GN… read more here.
Keywords: bulk; entanglement wedge; quantum fields; quantum ... See more keywords
States of charged quantum fields and their statistical properties in the presence of critical potential steps
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.052116
Abstract: The evolution of charged quantum fields under the action of constant nonuniform electric fields is studied. To this end we construct density operators of the quantum fields with different initial conditions. Then we study some… read more here.
Keywords: charged quantum; fields statistical; states charged; density operators ... See more keywords
Quantum fields in the static de Sitter universe
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.085003
Abstract: We construct explicit mode expansions of various tree-level propagators in the Rindler–de Sitter universe, also known as the static (or compact) patch of the de Sitter spacetime. We construct in particular the Wightman functions for… read more here.
Keywords: sitter; fields static; sitter universe; construct ... See more keywords
Gravitational collapse with quantum fields
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.104.l041703
Abstract: Gravitational collapse into a black hole has been extensively studied with classical sources. We develop a new formalism to simulate quantum fields forming a black hole. This formalism utilizes well-established techniques used for classical collapse… read more here.
Keywords: collapse; collapse quantum; gravitational collapse; formalism ... See more keywords
Frame dependence of the nonrelativistic limit of quantum fields
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review D"
DOI: 10.1103/physrevd.107.085016
Abstract: We study the non-relativistic limit of quantum fields for an inertial and a non-inertial observer. We show that non-relativistic particle states appear as a superposition of relativistic and non-relativistic particles in different frames. Hence, the… read more here.
Keywords: non relativistic; limit; frame; limit quantum ... See more keywords
Quantum complete prelude to inflation
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.065012
Abstract: It is shown that the inflationary paradigm admits quantum complete extensions of spacetime. The extended inflationary spacetimes still have geodesic borders, but quantum fields are prohibited from migrating across these borders by their evolution semigroups.… read more here.
Keywords: complete prelude; inflation; quantum complete; quantum fields ... See more keywords
A note on quantum fields in conformally flat spacetimes
Sign Up to like & getrecommendations! Published in 2019 at "Modern Physics Letters A"
DOI: 10.1142/s0217732319503486
Abstract: We develop a technique relating scalar fields with different masses in different conformally flat spacetimes. We apply this technique to the case of FRW spacetimes, with [Formula: see text], and discuss several examples. We also… read more here.
Keywords: flat spacetimes; conformally flat; fields conformally; note quantum ... See more keywords
Quantum Fields without Wick Rotation
Sign Up to like & getrecommendations! Published in 2019 at "Symmetry"
DOI: 10.3390/sym11030373
Abstract: We discuss the calculation of one-loop effective actions in Lorentzian spacetimes, based on a very simple application of the method of steepest descent to the integral over the field. We show that for static spacetimes… read more here.
Keywords: fields without; wick rotation; quantum fields; without wick ... See more keywords