Results 21 to 30 of about 1,143 (82)

$J/\psi$ production in Au+Au/Cu+Cu collisions at $\sqrt{s}_{NN}$=200 GeV and the threshold model [PDF]

open access: yes, 2006
Using the QGP motivated threshold model, where all the $J/\psi$'s are suppressed above a threshold density, we have analyzed the preliminary PHENIX data on the centrality dependence of nuclear modification factor for $J/\psi$'s in Cu+Cu and in Au+Au ...
A. K. Chaudhuri, M. Gyulassy
core   +1 more source

Conformal dynamics of quantum gravity with torsion

open access: yes, 1992
The trace anomaly induced dynamics of the conformal factor is investigated in four-dimensional quantum gravity with torsion. The constraints for the coupling constants of torsion matter interaction are obtained in the infrared stable fixed point of the ...
Antoniadis, I., Odintsov, S. D.
core   +1 more source

Anomalous thermodynamics at the micro-scale

open access: yes, 2012
Particle motion at the micro-scale is an incessant tug-of-war between thermal fluctuations and applied forces on one side, and the strong resistance exerted by fluid viscosity on the other.
Antonio Celani   +9 more
core   +1 more source

Stress Tensor from the Trace Anomaly in Reissner-Nordstrom Spacetimes

open access: yes, 2007
The effective action associated with the trace anomaly provides a general algorithm for approximating the expectation value of the stress tensor of conformal matter fields in arbitrary curved spacetimes.
D. Capper   +7 more
core   +1 more source

Aspects of Exactly Solvable Quantum-Corrected 2D Dilaton Gravity Theories

open access: yes, 1993
After reviewing the basic aspects of the exactly solvable quantum-corrected dilaton-gravity theories in two dimensions, we discuss a (subjective) selection of other aspects: a) supersymmetric extensions, b) canonical formalism, ADM-mass, and the ...
Bilal, Adel
core   +1 more source

Effective Potential for the Conformal Sector of Quantum Gravity with Torsion

open access: yes, 1993
The effective potential which describes the conformal dynamics of quantum gravity with torsion is discussed. The phase transitions induced by the combination of torsion and curvature are investigated.
Antoniadis   +29 more
core   +1 more source

The Trace Anomaly and Dynamical Vacuum Energy in Cosmology [PDF]

open access: yes, 2010
The trace anomaly of conformal matter implies the existence of massless scalar poles in physical amplitudes involving the stress-energy tensor. These poles may be described by a local effective action with massless scalar fields, which couple to ...
Mottola, Emil
core   +1 more source

Conformal Anomalies in Hydrodynamics

open access: yes, 2013
We study the effect of conformal anomalies on the hydrodynamic description of conformal field theories in even spacetime dimensions. We consider equilibrium curved backgrounds characterized by a time-like Killing vector and construct a local low energy ...
Eling, Christopher   +3 more
core   +1 more source

Scalar Gravitational Waves in the Effective Theory of Gravity

open access: yes, 2017
As a low energy effective field theory, classical General Relativity receives an infrared relevant modification from the conformal trace anomaly of the energy-momentum tensor of massless, or nearly massless, quantum fields.
Mottola, Emil
core   +1 more source

Real decoupling ghost quantization of the CGHS model for two dimensional black holes

open access: yes, 1994
A complete RST quantization of a CGHS model plus Strominger term is carried out. In so doing a conformal invariant theory with $\kappa=\frac{N}{12}$ is found, that is, without ghosts contribution.
A. Bilal   +10 more
core   +1 more source

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