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19932026
most citedAccelerating Universes with Scaling Dark Matter

2.5k citations

Showing 2020 · hep-thShow all

12 papers · 2 filters

hep-th2020★ 6 cited

On some integrable deformations of the Wess-Zumino-Witten model

N. Mohammedi

Lie algebra valued equations translating the integrability of a general two-dimensional Wess-Zumino-Witten model are given. We found simple solutions to these equations and identif…

hep-th2020★ 4 cited

Charge screening in the Abelian Higgs model

Péter Forgács, Árpád Lukács

In the Abelian Higgs model electric (and magnetic) fields of external charges (and currents) are screened by the scalar field. In this contribution, complementing recent investigat…

hep-th2020★ 4 cited

Conformal anomaly and helicity effects in kinetic theory via scale-dependent coupling

M. N. Chernodub, Eda Kilinçarslan

We modify a kinetic theory of massless fermions to incorporate the effects of the conformal anomaly. Working in a collisionless regime, we emulate the conformal anomaly via a momen…

hep-th2020★ 7 cited

Renormalization group equations and the recurrence pole relations in pure quantum gravity

Sergey N. Solodukhin

In the framework of dimensional regularization, we propose a generalization of the renormalization group equations in the case of the perturbative quantum gravity that involves ren…

hep-th2020★ 14 cited

Asymptotically flat hairy black holes in massive bigravity

Romain Gervalle, Mikhail S. Volkov

We study asymptotically flat black holes with massive graviton hair within the ghost-free bigravity theory. There have been contradictory statements in the literature about their e…

hep-th2020★ 19 cited

Spontaneous Non-Hermiticity in Nambu-Jona-Lasinio model

M. N. Chernodub, Alberto Cortijo, Marco Ruggieri

We explore the physical consequences of a scenario when the standard Hermitian Nambu--Jona-Lasinio (NJL) model spontaneously develops a non-Hermitian PT-symmetric ground state via…

hep-th2020★ 10 cited

On non-topological solitons in Abelian gauge theories coupled to U(1)U(1) symmetric scalar fields

Péter Forgács, Árpád Lukács

In a series of recent works Ishihara and Ogawa have investigated non-topological solitons (Q-balls) in a spontaneously broken Abelian gauge theory coupled to two complex scalar fie…

hep-th2020

A classical complex scalar field in a gauge background

Noureddine Mohammedi

We solve the equations of motion of a complex theory coupled to some given gauge field background. The solutions are given in both cylindrical and spherical coordinates and h…

hep-th2020★ 32 cited

Reconsidering the Ostrogradsky theorem: Higher-derivatives Lagrangians, Ghosts and Degeneracy

Alexander Ganz, Karim Noui

We review the fate of the Ostrogradsky ghost in higher-order theories. We start by recalling the original Ostrogradsky theorem and illustrate, in the context of classical mechanics…

hep-th2020★ 15 cited

Phase diagram of helically imbalanced QCD matter

M. N. Chernodub, Victor E. Ambrus

We discuss the influence of a helicity imbalance on the phase diagram of dense QCD at finite temperature. We argue that the helical chemical potential is a thermodynamically releva…

hep-th2020★ 8 cited

Provenance of classical Hamiltonian time crystals

Anton Alekseev, Dai Jin, Antti J. Niemi

Classical Hamiltonian systems with conserved charges and those with constraints often describe dynamics on a pre-symplectic manifold. Here we show that a pre-symplectic manifold is…

hep-th2020★ 13 cited

On BF-type higher-spin actions in two dimensions

K. B. Alkalaev, Xavier Bekaert

We propose a non-abelian higher-spin theory in two dimensions for an infinite multiplet of massive scalar fields and infinitely many topological higher-spin gauge fields together w…