scholarly journals Transport coefficients from the two particle irreducible effective action

2003 ◽  
Vol 68 (8) ◽  
Author(s):  
Gert Aarts ◽  
Jose M. Martínez Resco
Keyword(s):  
Effective Action ◽  
Transport Coefficients

scholarly journals Wiedemann-Franz laws and Sl(2, ℤ) duality in AdS/CMT holographic duals and one-dimensional effective actions for them

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Dmitry Melnikov ◽  
Horatiu Nastase
Keyword(s):  
Quantum Hall Effect ◽  
Effective Action ◽  
Transport Coefficients ◽  
Quantum Hall ◽  
Dual Theory ◽  
One Dimensional ◽  
Integer Quantum Hall Effect ◽  
Weakly Coupled ◽  
Holographic Duals ◽  
Integer Quantum

Abstract In this paper we study the Wiedemann-Franz laws for transport in 2+1 dimensions, and the action of Sl(2, ℤ) on this transport, for theories with an AdS/CMT dual. We find that Sl(2, ℤ) restricts the RG-like flow of conductivities and that the Wiedemann-Franz law is $$ \overline{L}=\overline{\kappa}/\left( T\sigma \right)={cg}_4^2\uppi /3 $$ L ¯ = κ ¯ / Tσ = cg 4 2 π / 3 , from the weakly coupled gravity dual. In a self-dual theory this value is also the value of L = κ/(Tσ) in the weakly coupled field theory description. Using the formalism of a 0+1 dimensional effective action for both generalized SY Kq models and the AdS4 gravity dual, we calculate the transport coefficients and show how they can be matched at large q. We construct a generalization of this effective action that is invariant under Sl(2, ℤ) and can describe vortex conduction and integer quantum Hall effect.

scholarly journals A panoply of Schwinger-Keldysh transport

2018 ◽  
Vol 5 (5) ◽  
Author(s):  
Kristan Jensen ◽  
Raja Marjieh ◽  
Natalia Pinzani-Fokeeva ◽  
Amos Yarom
Keyword(s):  
Effective Action ◽  
Constitutive Relations ◽  
Transport Coefficients ◽  
Second Law ◽  
Relativistic Fluids ◽  
Hydrodynamic Description ◽  
Onsager Relations ◽  
Statistical Mechanical ◽  
Classical Hydrodynamic

We classify all possible allowed constitutive relations of relativistic fluids in a statistical mechanical limit using the Schwinger-Keldysh effective action for hydrodynamics. We find that microscopic unitarity enforces genuinely new constraints on the allowed transport coefficients that are invisible in the classical hydrodynamic description; they are not implied by the second law or the Onsager relations. We term these conditions Schwinger-Keldysh positivity and provide explicit examples of the various allowed terms.

Effective action on global warming?

1990 ◽  
Vol 4 (6) ◽  
pp. 262
Author(s):  
P.R. Wyman
Keyword(s):  
Global Warming ◽  
Effective Action

TRANSPORT COEFFICIENTS IN F-S THEORY

1974 ◽  
Author(s):  
D. Bolmont ◽  
J. Salmon ◽  
M. Valton
Keyword(s):  
Transport Coefficients
Sign in / Sign up

Export Citation Format

Share Document