Note on the thermodynamics and the speed of sound of a scalar field
arXiv:1309.4282 · doi:10.1088/0264-9381/31/5/055006
Abstract
We investigate the correspondence between a perfect fluid and a scalar field and show a possible way of expressing thermodynamic quantities such as entropy, particle number density, temperature and chemical potential in terms of the scalar field phi and its kinetic term X. We prove a theorem which relates isentropy with purely kinetic Lagrangian. As an application, we study the evolution of the gravitational potential in cosmological perturbation theory.
arXiv comment18 pages, comments and references added. Section 6 expanded
References in corpus (42)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Dynamics of dark energy
- Particle Physics Models of Inflation and the Cosmological Density Perturbation
- k-Inflation
- Perturbations in k-inflation
- Field Theory of Tachyon Matter
- Reheating in Inflationary Cosmology: Theory and Applications
- Can the clustered dark matter and the smooth dark energy arise from the same scalar field ?
- k-Essence, superluminal propagation, causality and emergent geometry
- Particle physics models of inflation and curvaton scenarios
- Bulk Viscous Cosmology
- Relativistic cosmology and large-scale structure
- Thoughts on Tachyon Cosmology
- Scalar Fields as Dark Matter in Spiral Galaxies
- The Imperfect Fluid behind Kinetic Gravity Braiding
- Bulk Viscous Cosmology
- Measuring the Speed of Sound of Quintessence
- Causal Thermodynamics in Relativity
- Unified Dark Matter in Scalar Field Cosmologies
- Relativistic Acoustic Geometry
- Note on the Evolution of the Gravitational Potential in Rastall Scalar Field Theories
- Unified Dark Matter Scalar Field Models
- Bulk viscous cosmology with causal transport theory
- Entropy perturbations in quartessence Chaplygin models
- Attractor scenarios and superluminal signals in k-essence cosmology
- The correspondence between a scalar field and an effective perfect fluid
- Relativistic hydrodynamics with sources for cosmological K-fluids
- Unified dark energy and dark matter from a scalar field different from quintessence
- Cosmological tachyon condensation
- Unified Dark Matter scalar field models with fast transition
- A note on perfect scalar fields
- Scalar models for the generalized Chaplygin gas and the structure formation constraints
- The Homogeneous Scalar Field and the Wet Dark Sides of the Universe
- Thermodynamics of k-essence
- Cosmological perturbations from statistical thermal fluctuations
- Thermodynamics of Dark Energy
- An analysis of cosmological perturbations in hydrodynamical and field representations
- Cosmological status of Lagrangian theory of density perturbations
- No-go theorem for static scalar field dark matter halos with no Noether charges
- Note on scalars, perfect fluids, constrained field theories, and all that
- Scalar models for the unification of the dark sector
- Accelerating Universes from Short-Range Interactions
Cited by in corpus (19)
- Speeding up the universe using dust with pressure
- Imperfect fluid description of modified gravities
- Duality between k-essence and Rastall gravity
- Scalar field as a perfect fluid: thermodynamics of minimally coupled scalars and Einstein frame scalar-tensor gravity
- Sound speed of scalar field dark energy: weak effects and large uncertainties
- Lagrangian description of cosmic fluids: mapping dark energy into unified dark energy
- Note on scalars, perfect fluids, constrained field theories, and all that
- FRW universe in the laboratory
- Emerging the dark sector from thermodynamics of cosmological systems with constant pressure
- Interacting Scalar fields: Dark matter and early dark energy
- Viability of nonminimally coupled f (R) gravity
- Anisotropy of magnetized quark matter
- Sub-horizon evolution of cold dark matter perturbations through dark matter-dark energy equivalence epoch
- Primordial perturbations and inflation in holographic cosmology
- Revisiting primordial black holes formation from preheating instabilities: the case of Starobinsky inflation
- Scalar fluid in scalar-tensor gravity from an equivalent picture of thermodynamic and fluid descriptions of gravitational dynamics
- Analog dual to a 2+1-dimensional holographic superconductor
- Primordial perturbations and inflation in a holography inspired Gauss-Bonnet cosmology
- K-essence sources of Kerr-Schild spacetimes