Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Matthaiakakis, Ioannis"'
There exists a long-standing debate regarding the torsion contribution to the 4d chiral anomaly of a Dirac fermion. Central to this debate is the Nieh-Yan anomaly, which has been considered ill-defined and a regularization artifact. Using a heat-kern
Externí odkaz:
http://arxiv.org/abs/2409.06766
Publikováno v:
JHEP 02 (2024) 071
We consider as a model of Weyl semimetal thermoelectric transport a $(3+1)$-dimensional charged, relativistic and relaxed fluid with a $U(1)_{V} \times U(1)_{A}$ chiral anomaly. We take into account all possible mixed energy, momentum, electric and c
Externí odkaz:
http://arxiv.org/abs/2309.05692
General relativity (GR) as described in terms of curvature by the Einstein-Hilbert action is dynamically equivalent to theories of gravity formulated in terms of spacetime torsion or non-metricity. This forms what is called the geometrical trinity of
Externí odkaz:
http://arxiv.org/abs/2304.06752
Publikováno v:
Phys.Rev.D 108 (2023) 5, 056003
In hydrodynamics, for generic relaxations, the stress tensor and $U(1)$ charge current two-point functions are not time-reversal covariant. This remains true even if the Martin-Kadanoff procedure happens to yield Onsager reciprocal correlators. We co
Externí odkaz:
http://arxiv.org/abs/2304.01248
Publikováno v:
Phys.Rev.D 108 (2023) 1, 016003
We show that literature results claimed for the magnetic field dependence of the longitudinal conductivity in anomalous first-order hydrodynamics are frame dependent at this derivative order. In particular, we focus on $(3+1)$-dimensional hydrodynami
Externí odkaz:
http://arxiv.org/abs/2212.09761
Publikováno v:
JHEP 05 (2023) 218
Existing hydrodynamic models of charged fluids consider any external electric field acting on the fluid as either first order in the hydrodynamic derivative expansion and completely arbitrary or zeroth order but constrained by the fluid's chemical po
Externí odkaz:
http://arxiv.org/abs/2211.05791
Publikováno v:
SciPost Phys. 14, 099 (2023)
Motivated by establishing holographic renormalization for gravitational theories with non-metricity and torsion, we present a new and efficient general method for calculating Gibbons-Hawking-York (GHY) terms. Our method consists of linearizing any no
Externí odkaz:
http://arxiv.org/abs/2211.02064
Autor:
Xian, Zhuo-Yu, Danz, Sven, Fernández, David Rodríguez, Matthaiakakis, Ioannis, Tutschku, Christian, Klees, Raffael L., Erdmenger, Johanna, Meyer, René, Hankiewicz, Ewelina M.
Publikováno v:
Phys. Rev. B 107, L201403 (2023)
Motivated by Hall viscosity measurements in graphene sheets, we study hydrodynamic transport of electrons in a channel of finite width in external electric and magnetic fields. We consider electric charge densities varying from close to the Dirac poi
Externí odkaz:
http://arxiv.org/abs/2207.10528
Autor:
Matthaiakakis, Ioannis
We employ the AdS/CFT correspondence and hydrodynamics to analyze the transport properties of \(2+1\) dimensional electron fluids. In this way, we use theoretical methods from both condensed matter and high-energy physics to derive tangible predictio
Autor:
Amoretti, Andrea, Brattan, Daniel K., Magnoli, Nicodemo, Martinoia, Luca, Matthaiakakis, Ioannis, Solinas, Paolo
Publikováno v:
Phys. Rev. Research 4, 033211 (2022)
In this paper we use a Ginzburg-Landau approach to show that a suitably strong electric field can drive a phase transition from a superconductor to a normal metal. The transition is induced by taking into account corrections to the permittivity due t
Externí odkaz:
http://arxiv.org/abs/2202.00687