Phonon modes of magnetic vortex lattices in finite isospin QCD

Autor:	Prabal Adhikari, Leeser, Elizabeth, Markowski, Jake
Předmět:	High Energy Physics - Theory Nuclear Theory (nucl-th) High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Nuclear Theory High Energy Physics - Theory (hep-th) High Energy Physics::Phenomenology FOS: Physical sciences
Zdroj:	INSPIRE-HEP
Popis:	We study phonon modes associated with the magnetic vortex lattices in finite isospin chiral perturbation theory near the upper critical point by introducing quasimomentum fluctuations to the lattice and find the dispersion relations associated with the optical and acoustic modes. We find that one of the optical modes is massless and that its energy for small transverse quasimomentum is quintic (due to the presence of an isospin chemical potential), which is significantly softer than the supersoft (quadratic) massless mode of the Abelian Higgs Model (AHM). Unlike the AHM, the speed of the longitudinal mode depends on both the isospin chemical potential and the external magnetic field due to the presence of derivative interactions. Our results suggest that the finite isospin phase diagram of Quantum Chromodynamics supports a disordered (liquid/gas) phase of magnetic vortices. Comment: 8 pages, 4 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d5954eb13a868dfe59c90f2cb3bd586 http://inspirehep.net/record/2087911 Zobrazit plný text záznamu