Electromagnetic fluctuation and collective modes in relativistic bosonic superfluid in mixed dimensions

Article Astronomy & Astrophysics

Negative refraction and rotons in the relativistic Bose gas

D. M. Reis et al.

Summary: In this study, we investigate the dispersion of a classical electromagnetic field in a relativistic ideal gas of charged bosons using scalar quantum electrodynamics at finite temperature and charge density. The research reveals that the gas behaves as a left-handed material with negative effective index of refraction below the transverse plasmon frequency. In the condensed phase, the longitudinal plasmon dispersion relation shows a roton-type local minimum that disappears at the transition temperature.

PHYSICS LETTERS B (2021)

Add to Collection

Article Astronomy & Astrophysics

Thermoelectric properties and Wiedemann-Franz-like relations in mixed-dimensional QEDs from particle-vortex dualities

Wei-Han Hsiao

Summary: The study investigates the thermoelectric properties of mixed-dimensional quantum electrodynamics of relativistic Dirac fermions and Wilson-Fisher bosons, revealing their self-dual nature and ability to form nontrivial many-body phases under different parameter values. Using particle-vortex duality, a variety of thermoelectric relations for strongly interacting phases were derived, showing dependencies on the Seebeck tensor determinant and the Hall angle theta(H), among other parameters, at the self-dual point. The dual fermion description sheds light on how the Seebeck tensor of the bosonic theory varies according to the dynamic regime characterized by theta(H).

PHYSICAL REVIEW D (2021)

Add to Collection

Article Materials Science, Multidisciplinary