scholarly journals Gauge-invariant microscopic kinetic theory of superconductivity: Application to the optical response of Nambu-Goldstone and Higgs modes

2019 ◽  
Vol 100 (10) ◽  
Author(s):  
F. Yang ◽  
M. W. Wu
Keyword(s):  
Kinetic Theory ◽  
Optical Response ◽  
Gauge Invariant ◽  
Theory Of Superconductivity

scholarly journals Heavy quark diffusion in an overoccupied gluon plasma

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
K. Boguslavski ◽  
A. Kurkela ◽  
T. Lappi ◽  
J. Peuron
Keyword(s):  
Diffusion Coefficient ◽  
Kinetic Theory ◽  
Heavy Quark ◽  
Rapid Growth ◽  
Linear Growth ◽  
Gluon Plasma ◽  
Gauge Invariant ◽  
Damped Oscillations ◽  
Plasmon Frequency ◽  
Far From Equilibrium

Abstract We extract the heavy-quark diffusion coefficient κ and the resulting momentum broadening 〈p2〉 in a far-from-equilibrium non-Abelian plasma. We find several features in the time dependence of the momentum broadening: a short initial rapid growth of 〈p2〉, followed by linear growth with time due to Langevin-type dynamics and damped oscillations around this growth at the plasmon frequency. We show that these novel oscillations are not easily explained using perturbative techniques but result from an excess of gluons at low momenta. These oscillation are therefore a gauge invariant confirmation of the infrared enhancement we had previously observed in gauge-fixed correlation functions. We argue that the kinetic theory description of such systems becomes less reliable in the presence of this IR enhancement.

Relativistic Kinetic Theory

2017 ◽  
Author(s):  
Gregory V. Vereshchagin ◽  
Alexey G. Aksenov
Keyword(s):  
Kinetic Theory ◽  
Relativistic Kinetic Theory

The geometric structure and optical response of gaseous endohedral magnesium-fullerenes

2003 ◽  
Vol 50 (15-17) ◽  
pp. 2691-2704 ◽  
Author(s):  
M. Aichinger ◽  
S. A. Chin ◽  
E. Krotscheck ◽  
H. A. Schuessler
Keyword(s):  
Geometric Structure ◽  
Optical Response

A New Method of Viscosity Determination from the Electro-Optical Response of a Nematic LCD

1996 ◽  
Vol 6 (12) ◽  
pp. 1663-1668 ◽  
Author(s):  
O. Cossalter ◽  
B. Cramer ◽  
D. A. Mlynski
Keyword(s):  
Optical Response ◽  
New Method ◽  
Viscosity Determination
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