Results 11 to 20 of about 203,417 (295)
Hamiltonian cosmological perturbation theory [PDF]
Physics Letters B, 2006 The Hamiltonian approach to cosmological perturbations in general relativity in finite space-time is developed, where a cosmological scale factor is identified with spatial averaging the metric determinant logarithm. This identification preserves the number of variables and leads to a cosmological perturbation theory with the scalar potential ...
Barbashov, B. M. +3 more
openaire +2 more sources
Cosmological perturbation theory revisited [PDF]
Classical and Quantum Gravity, 2011 29 pages, no figures, minor ...
Uggla, Claes, Wainwright, John
openaire +3 more sources
Holographic complexity and noncommutative gauge theory
Journal of High Energy Physics, 2018 We study the holographic complexity of noncommutative field theories. The four-dimensional N = 4 $$ \mathcal{N}=4 $$ noncommutative super Yang-Mills theory with Moyal algebra along two of the spatial directions has a well known holographic dual as a type
Josiah Couch +3 more
doaj +1 more source
Introduction to Superstring Cosmology [PDF]
, 2010 This is a summary of lectures in superstring cosmology given by the author at the CORFU 2009 School and Workshops "Theory - Cosmology - Phenomenology", Corfu Institute, Greece, Sept 6-13, 2009.
Angelantonj +27 more
core +1 more source
Holographic spacetime, black holes and quantum error correcting codes: a review
European Physical Journal C: Particles and Fields, 2022 This article reviews the progress in our understanding of the reconstruction of the bulk spacetime in the holographic correspondence from the dual field theory including an account of how these developments have led to the reproduction of the Page curve ...
Tanay Kibe +2 more
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Warm Higgs–Starobinsky inflation
European Physical Journal C: Particles and Fields, 2022 In this work, we investigate the Higgs–Starobinsky (HS) model in the context of warm inflation scenario. The dissipative parameter as a linear form of temperature of warm inflation is considered with strong and weak regimes.
Daris Samart +2 more
doaj +1 more source
, 2006 These lectures present a brief review of inflationary cosmology, provide an overview of the theory of cosmological perturbations, and then focus on the conceptual problems of the current paradigm of early universe cosmology, thus motivating an ...
Robert Brandenberger +1 more
core +3 more sources
Emergent cosmology from matrix theory
Journal of High Energy Physics, 2022 Matrix theory is a proposed non-perturbative definition of superstring theory in which space is emergent. We begin a study of cosmology in the context of matrix theory.
Suddhasattwa Brahma +2 more
doaj +1 more source
Extending cosmology: the metric approach [PDF]
, 2012 In this chapter it is shown how the introduction of a fundamental constant of nature with dimensions of acceleration into the theory of gravity makes it possible to extend gravity in a very consistent manner.Comment: 2012, Extending Cosmology: The Metric
Mendoza, S.
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DFT in supermanifold formulation and group manifold as background geometry
Journal of High Energy Physics, 2019 We develop the formulation of DFT on pre-QP-manifold. The consistency conditions like section condition and closure constraint are unified by a weak master equation. The Bianchi identities are also characterized by the pre-Bianchi identity.
Ursula Carow-Watamura +3 more
doaj +1 more source