Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 07/2011, Volume 2011, Issue 7, pp. 17 - 17

We introduce a general class of four-dimensional effective field theories which include curved space Galileons and DBI theories possessing nonlinear shift-like...

modified gravity | quantum field theory on curved space | extra dimensions | UNIVERSAL FIELD-EQUATIONS | ASTRONOMY & ASTROPHYSICS | GRAVITY | PHYSICS, PARTICLES & FIELDS | ASTRONOMY AND ASTROPHYSICS | curved space Galileons and DBI theories

modified gravity | quantum field theory on curved space | extra dimensions | UNIVERSAL FIELD-EQUATIONS | ASTRONOMY & ASTROPHYSICS | GRAVITY | PHYSICS, PARTICLES & FIELDS | ASTRONOMY AND ASTROPHYSICS | curved space Galileons and DBI theories

Journal Article

Classical and Quantum Gravity, ISSN 0264-9381, 04/2016, Volume 33, Issue 9, pp. 95009 - 95054

We develop a renormalisation scheme for time-ordered products in interacting field theories on curved space-times that consists of an analytic regularisation...

quantum field theory on curved space-times-perturbation theory | renormalisation | STATES | QUANTUM SCIENCE & TECHNOLOGY | PHYSICS, MULTIDISCIPLINARY | ORDERED PRODUCTS | QUANTUM-FIELD THEORY | quantum field theory on curved space-times | SCALAR FIELD | WICK POLYNOMIALS | TENSOR | LOCALITY | perturbation theory | ASTRONOMY & ASTROPHYSICS | RENORMALIZATION | PHYSICS, PARTICLES & FIELDS | Amplitudes | Computation | Mathematical analysis | Scalars | Field theory | Quantum gravity | Invariants | Curved

quantum field theory on curved space-times-perturbation theory | renormalisation | STATES | QUANTUM SCIENCE & TECHNOLOGY | PHYSICS, MULTIDISCIPLINARY | ORDERED PRODUCTS | QUANTUM-FIELD THEORY | quantum field theory on curved space-times | SCALAR FIELD | WICK POLYNOMIALS | TENSOR | LOCALITY | perturbation theory | ASTRONOMY & ASTROPHYSICS | RENORMALIZATION | PHYSICS, PARTICLES & FIELDS | Amplitudes | Computation | Mathematical analysis | Scalars | Field theory | Quantum gravity | Invariants | Curved

Journal Article

Journal of Cosmology and Astroparticle Physics, 06/2015, Volume 2015, Issue 6

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 04/2014, Volume 2014, Issue 4, pp. 9 - 9

We consider Schwinger pair production in 1+1 dimensional de Sitter space, filled with a constant electric field E. This can be thought of as a model for...

ination | Initial conditions and eternal universe | quantum field theory on curved space | initial conditions and eternal universe | DECAY | ASTRONOMY & ASTROPHYSICS | CURVED SPACE | inflation | FALSE VACUUM | PHYSICS, PARTICLES & FIELDS | General Relativity and Quantum Cosmology | High Energy Physics - Theory | ELECTRIC FIELDS | SEMICLASSICAL APPROXIMATION | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | DE SITTER GROUP | DE SITTER SPACE | MASS | CURRENTS | EXPECTATION VALUE | TUNNEL EFFECT | PAIR PRODUCTION

ination | Initial conditions and eternal universe | quantum field theory on curved space | initial conditions and eternal universe | DECAY | ASTRONOMY & ASTROPHYSICS | CURVED SPACE | inflation | FALSE VACUUM | PHYSICS, PARTICLES & FIELDS | General Relativity and Quantum Cosmology | High Energy Physics - Theory | ELECTRIC FIELDS | SEMICLASSICAL APPROXIMATION | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | DE SITTER GROUP | DE SITTER SPACE | MASS | CURRENTS | EXPECTATION VALUE | TUNNEL EFFECT | PAIR PRODUCTION

Journal Article

5.
Full Text
Cosmological constant problem and renormalized vacuum energy density in curved background

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 06/2017, Volume 2017, Issue 6, pp. 6 - 6

The current vacuum energy density observed as dark energy rho dark similar or equal to 2.5 x 10(-47) GeV4 is unacceptably small compared with any other scales....

dark energy theory | quantum cosmology | Quantum field theory on curved space | INTERACTING THEORIES | MOMENTUM TENSOR | DARK ENERGY | SCALAR FIELD | EXPECTATION VALUE | WMAP OBSERVATIONS | QUANTUM-FIELD-THEORY | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | ADIABATIC REGULARIZATION | SPACETIME | quantum field theory on curved space | PHYSICS, PARTICLES & FIELDS | NONLUMINOUS MATTER | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | COSMOLOGICAL CONSTANT | GEV RANGE | SPACE-TIME | SCALAR FIELDS | MASS | COMPARATIVE EVALUATIONS | ENERGY DENSITY | RENORMALIZATION

dark energy theory | quantum cosmology | Quantum field theory on curved space | INTERACTING THEORIES | MOMENTUM TENSOR | DARK ENERGY | SCALAR FIELD | EXPECTATION VALUE | WMAP OBSERVATIONS | QUANTUM-FIELD-THEORY | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | ADIABATIC REGULARIZATION | SPACETIME | quantum field theory on curved space | PHYSICS, PARTICLES & FIELDS | NONLUMINOUS MATTER | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | COSMOLOGICAL CONSTANT | GEV RANGE | SPACE-TIME | SCALAR FIELDS | MASS | COMPARATIVE EVALUATIONS | ENERGY DENSITY | RENORMALIZATION

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 08/2013, Volume 2013, Issue 8, pp. 45 - 45

We present a simple method for deriving the renormalization counterterms from the components of the energy-momentum tensor in curved space-time. This method...

quantum field theory on curved space | gravity | PARTICLE CREATION | SCALAR FIELD-THEORIES | TRACE ANOMALIES | ASTRONOMY & ASTROPHYSICS | ADIABATIC REGULARIZATION | ENERGY-MOMENTUM TENSOR | BACK-REACTION PROBLEM | CONFORMAL ANOMALIES | PROPAGATOR | PHYSICS, PARTICLES & FIELDS | Tensors | Adiabatic flow | Approximation | Mathematical analysis | Derivation | Cosmology | Equations of motion | Formalism | Curved | ADIABATIC APPROXIMATION | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | SPACE-TIME | COSMOLOGICAL MODELS | EQUATIONS OF MOTION | SCALAR FIELDS | EXPANSION | METRICS | COMPARATIVE EVALUATIONS | RENORMALIZATION

quantum field theory on curved space | gravity | PARTICLE CREATION | SCALAR FIELD-THEORIES | TRACE ANOMALIES | ASTRONOMY & ASTROPHYSICS | ADIABATIC REGULARIZATION | ENERGY-MOMENTUM TENSOR | BACK-REACTION PROBLEM | CONFORMAL ANOMALIES | PROPAGATOR | PHYSICS, PARTICLES & FIELDS | Tensors | Adiabatic flow | Approximation | Mathematical analysis | Derivation | Cosmology | Equations of motion | Formalism | Curved | ADIABATIC APPROXIMATION | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | SPACE-TIME | COSMOLOGICAL MODELS | EQUATIONS OF MOTION | SCALAR FIELDS | EXPANSION | METRICS | COMPARATIVE EVALUATIONS | RENORMALIZATION

Journal Article

Journal of High Energy Physics, ISSN 1029-8479, 10/2019, Volume 2019, Issue 10, pp. 1 - 22

We consider, in more details than it was done previously, the effective low- energy behavior in the quantum theory of a light scalar field coupled to another...

Quantum Physics | Quantum Field Theories, String Theory | Effective Field Theories | Classical and Quantum Gravitation, Relativity Theory | Physics | Models of Quantum Gravity | Elementary Particles, Quantum Field Theory | PHYSICS, PARTICLES & FIELDS | Analysis | Models | Quantum theory | Functional integration | Field theory | Decoupling | Physics - High Energy Physics - Theory

Quantum Physics | Quantum Field Theories, String Theory | Effective Field Theories | Classical and Quantum Gravitation, Relativity Theory | Physics | Models of Quantum Gravity | Elementary Particles, Quantum Field Theory | PHYSICS, PARTICLES & FIELDS | Analysis | Models | Quantum theory | Functional integration | Field theory | Decoupling | Physics - High Energy Physics - Theory

Journal Article

CLASSICAL AND QUANTUM GRAVITY, ISSN 0264-9381, 10/2019, Volume 36, Issue 20, p. 205013

The Entropic Dynamics reconstruction of quantum mechanics is extended to the quantum theory of scalar fields in curved space-time. The Entropic Dynamics...

QUANTUM SCIENCE & TECHNOLOGY | quantum field theeory | PHYSICS, MULTIDISCIPLINARY | quantum foundations | SCHRODINGER-EQUATION | Hamiltonian dynamics | quantum fields in curved space-time | CONSISTENCY | MECHANICS | ASTRONOMY & ASTROPHYSICS | information theory | INFORMATION GEOMETRY | QUANTIZATION | PHYSICS, PARTICLES & FIELDS

QUANTUM SCIENCE & TECHNOLOGY | quantum field theeory | PHYSICS, MULTIDISCIPLINARY | quantum foundations | SCHRODINGER-EQUATION | Hamiltonian dynamics | quantum fields in curved space-time | CONSISTENCY | MECHANICS | ASTRONOMY & ASTROPHYSICS | information theory | INFORMATION GEOMETRY | QUANTIZATION | PHYSICS, PARTICLES & FIELDS

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 06/2019, Volume 2019, Issue 6, pp. 12 - 12

We investigate the effect of infrared non-locality on the entanglement between two causally separated open-charts in the de Sitter space-time. Inspired by the...

SPACE | quantum cosmology | ASTRONOMY & ASTROPHYSICS | cosmology of theories beyond the SM | SCALAR FIELD | quantum field theory on curved space | QUANTUM-FIELD-THEORY | PHYSICS, PARTICLES & FIELDS

SPACE | quantum cosmology | ASTRONOMY & ASTROPHYSICS | cosmology of theories beyond the SM | SCALAR FIELD | quantum field theory on curved space | QUANTUM-FIELD-THEORY | PHYSICS, PARTICLES & FIELDS

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 09/2019, Volume 2019, Issue 9, pp. 15 - 15

We map the quantum problem of a free bosonic field in a space-time dependent background into a classical problem. N degrees of freedom of a real field in the...

PARTICLE | ASTRONOMY & ASTROPHYSICS | CREATION | physics of the early universe | quantum field theory on curved space | inflation | PHYSICS, PARTICLES & FIELDS

PARTICLE | ASTRONOMY & ASTROPHYSICS | CREATION | physics of the early universe | quantum field theory on curved space | inflation | PHYSICS, PARTICLES & FIELDS

Journal Article

1991, London Mathematical Society student texts, ISBN 052134400X, Volume 17., ix, 315

Book

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 10/2013, Volume 2013, Issue 10, pp. 11 - 11

We develop a cosmological model where primordial inflation is driven by a 'solid', defined as a system of three derivatively coupled scalar fields obeying...

ination | quantum cosmology | physics of the early universe | quantum field theory on curved space | K-INFLATION | PERTURBATIONS | ASTRONOMY & ASTROPHYSICS | SCALE | inflation | PHYSICS, PARTICLES & FIELDS | Broken symmetry | Adiabatic flow | Inflation | Perturbation methods | Mathematical analysis | Astronomical models | Cosmology | Field theory | Standards | FIELD THEORIES | TENSORS | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | COSMOLOGICAL MODELS | SCALAR FIELDS | SYMMETRY BREAKING | FLUCTUATIONS | PERTURBATION THEORY | SCALE INVARIANCE | SOLIDS | ANISOTROPY

ination | quantum cosmology | physics of the early universe | quantum field theory on curved space | K-INFLATION | PERTURBATIONS | ASTRONOMY & ASTROPHYSICS | SCALE | inflation | PHYSICS, PARTICLES & FIELDS | Broken symmetry | Adiabatic flow | Inflation | Perturbation methods | Mathematical analysis | Astronomical models | Cosmology | Field theory | Standards | FIELD THEORIES | TENSORS | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | COSMOLOGICAL MODELS | SCALAR FIELDS | SYMMETRY BREAKING | FLUCTUATIONS | PERTURBATION THEORY | SCALE INVARIANCE | SOLIDS | ANISOTROPY

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 02/2013, Volume 2013, Issue 2, pp. 42 - 42

We prove that the linear instability in a non-degenerate higher derivative theory, the Ostrogradski instability, can only be removed by the addition of...

modified gravity | quantum field theory on curved space | gravity | NONLOCALITY | ASTRONOMY & ASTROPHYSICS | DARK ENERGY | LAGRANGIANS | GRAVITY THEORIES | PHYSICS, PARTICLES & FIELDS | Ghosts | Cosmology | Instability | Stability | Derivatives | PHASE SPACE | COSMOLOGY | INSTABILITY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | ASTROPHYSICS | LIMITING VALUES

modified gravity | quantum field theory on curved space | gravity | NONLOCALITY | ASTRONOMY & ASTROPHYSICS | DARK ENERGY | LAGRANGIANS | GRAVITY THEORIES | PHYSICS, PARTICLES & FIELDS | Ghosts | Cosmology | Instability | Stability | Derivatives | PHASE SPACE | COSMOLOGY | INSTABILITY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | ASTROPHYSICS | LIMITING VALUES

Journal Article

14.
Full Text
Scalar correlation functions in de Sitter space from the stochastic spectral expansion

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 08/2019, Volume 2019, Issue 8, pp. 1 - 1

We consider light scalar fields during inflation and show how the stochastic spectral expansion method can be used to calculate two-point correlation functions...

PERTURBATIONS | quantum field theory on curved space | physics of the early universe | FIELD | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

PERTURBATIONS | quantum field theory on curved space | physics of the early universe | FIELD | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 01/2018, Volume 2018, Issue 1, pp. 28 - 28

We work out the one-loop and order kappa M-2(phi)2 UV divergent contributions, coming from Unimodular Gravity and General Relativity, to the S matrix element...

modified gravity | quantum field theory on curved space Ar | gravity | COSMOLOGICAL CONSTANT | quantum field theory on curved space | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

modified gravity | quantum field theory on curved space Ar | gravity | COSMOLOGICAL CONSTANT | quantum field theory on curved space | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 01/2011, Volume 2011, Issue 1, pp. 023 - 23

We calculate IR divergent graviton one-loop corrections to scalar correlators in de Sitter space, and show that the leading IR contribution may be reproduced...

Cosmological perturbation theory | Quantum field theory on curved space | Inflation | PERTURBATIONS | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | cosmological perturbation theory | ONE-LOOP CORRECTIONS | quantum field theory on curved space | QUANTUM INSTABILITY | inflation | PHYSICS, PARTICLES & FIELDS | CORRECTIONS | TENSORS | DE SITTER SPACE | BLACK HOLES | CHAOS THEORY | INFRARED DIVERGENCES | SEMICLASSICAL APPROXIMATION | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | GRAVITONS | SPACE-TIME | ASTROPHYSICS | SCALARS

Cosmological perturbation theory | Quantum field theory on curved space | Inflation | PERTURBATIONS | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | cosmological perturbation theory | ONE-LOOP CORRECTIONS | quantum field theory on curved space | QUANTUM INSTABILITY | inflation | PHYSICS, PARTICLES & FIELDS | CORRECTIONS | TENSORS | DE SITTER SPACE | BLACK HOLES | CHAOS THEORY | INFRARED DIVERGENCES | SEMICLASSICAL APPROXIMATION | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | GRAVITONS | SPACE-TIME | ASTROPHYSICS | SCALARS

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 11/2013, Issue 11

We study higher order corrections in new minimal supergravity models of a single scalar field inflation. The gauging in these models leads to a massive vector...

MATTER | HIGHER-DERIVATIVE SUPERGRAVITY | FIELD | ASTRONOMY & ASTROPHYSICS | quantum field theory on curved space | inflation | UNIVERSE | MULTIPLETS | supersymmetry and cosmology | PHYSICS, PARTICLES & FIELDS

MATTER | HIGHER-DERIVATIVE SUPERGRAVITY | FIELD | ASTRONOMY & ASTROPHYSICS | quantum field theory on curved space | inflation | UNIVERSE | MULTIPLETS | supersymmetry and cosmology | PHYSICS, PARTICLES & FIELDS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 05/2008, Volume 2008, Issue 5, p. 001

We use the techniques of effective field theory in an expanding universe to examine the effect of choosing an excited inflationary initial state built over the...

Cosmological perturbation theory | Physics of the early universe | Inflation | Quantum field theory on curved space | K-INFLATION | QUANTUM FIELD-THEORY | PERTURBATION | cosmological perturbation theory | PROBE WMAP OBSERVATIONS | inflation | SITTER SPACE | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | SPECTRUM | PHYSICS | quantum field theory on curved space | physics of the early universe | PHYSICS, PARTICLES & FIELDS | FIELD THEORIES | EXCITED STATES | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | SPACE-TIME | DE SITTER SPACE | RELICT RADIATION | INTERACTIONS | SPECTRA | INFLATIONARY UNIVERSE | UNIVERSE

Cosmological perturbation theory | Physics of the early universe | Inflation | Quantum field theory on curved space | K-INFLATION | QUANTUM FIELD-THEORY | PERTURBATION | cosmological perturbation theory | PROBE WMAP OBSERVATIONS | inflation | SITTER SPACE | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | SPECTRUM | PHYSICS | quantum field theory on curved space | physics of the early universe | PHYSICS, PARTICLES & FIELDS | FIELD THEORIES | EXCITED STATES | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | SPACE-TIME | DE SITTER SPACE | RELICT RADIATION | INTERACTIONS | SPECTRA | INFLATIONARY UNIVERSE | UNIVERSE

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 07/2019, Volume 2019, Issue 7, pp. 11 - 11

The discussion of vacuum energy is currently a subject of great theoretical importance, specially concerning the cosmological constant problem in General...

FORCE | gravity | ASTRONOMY & ASTROPHYSICS | NEWTONIAN GRAVITY | CONSTRAINTS | quantum field theory on curved space | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Theory

FORCE | gravity | ASTRONOMY & ASTROPHYSICS | NEWTONIAN GRAVITY | CONSTRAINTS | quantum field theory on curved space | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Theory

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 10/2019, Volume 2019, Issue 10, pp. 61 - 61

We introduce a toy model of scalar particles with a trilinear scalar coupling in cosmology. The trilinear coupling phi(2)chi causes production of...

FIELDS | DARK-MATTER | particle physics - cosmology connection | quantum field theory on curved space | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

FIELDS | DARK-MATTER | particle physics - cosmology connection | quantum field theory on curved space | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

Journal Article