Hawking fragmentation and Hawking attenuation in Weyl semimetals

D Sabsovich, P Wunderlich, V Fleurov, DI Pikulin… - Physical Review …, 2022 - APS
We study black and white hole analogs in Weyl semimetals with inhomogeneous nodal tilts.
We study how the presence of a microscopic lattice, giving rise to low-energy fermion …

Tabletop Tunable Chiral Photonic Emitter

L Wang, MF Ciappina, T Brabec, X Liu - Physical Review Letters, 2024 - APS
The increasing interest in chiral light stems from its spiral trajectory along the propagation
direction, facilitating the interaction between different polarization states of light and matter …

Analogue Hawking radiation as a tunneling in a two-level PT-symmetric system

B Bagchi, R Ghosh, S Sen - Entropy, 2023 - mdpi.com
In light of a general scenario of a two-level non-Hermitian PT-symmetric Hamiltonian, we
apply the tetrad-based method to analyze the possibility of analogue Hawking radiation. We …

Anisotropic optics and gravitational lensing of tilted Weyl fermions

V Könye, L Mertens, C Morice, D Chernyavsky… - Physical Review B, 2023 - APS
We show that tilted Weyl semimetals with a spatially varying tilt of the Weyl cones provide a
platform for studying analogs to problems in anisotropic optics as well as curved spacetime …

Thermalization by a synthetic horizon

L Mertens, AG Moghaddam, D Chernyavsky… - Physical Review …, 2022 - APS
Synthetic horizons in models for quantum matter provide an alternative route to explore
fundamental questions of modern gravitational theory. Here we apply these concepts to the …

Horizon physics of quasi-one-dimensional tilted Weyl cones on a lattice

V Könye, C Morice, D Chernyavsky… - Physical Review …, 2022 - APS
To simulate the dynamics of massless Dirac fermions in curved space-times with one, two,
and three spatial dimensions, we construct tight-binding Hamiltonians with spatially varying …

Fractal nodal band structures

M Stålhammar, C Morais Smith - Physical Review Research, 2023 - APS
Non-Hermitian systems exhibit interesting band structures, where novel topological
phenomena arise from the existence of exceptional points at which eigenvalues and …

Duality between the quantum inverted harmonic oscillator and inverse square potentials

S Sundaram, CP Burgess, DHJ O'Dell - New Journal of Physics, 2024 - iopscience.iop.org
In this paper we show how the quantum mechanics of the inverted harmonic oscillator (IHO)
can be mapped to the quantum mechanics of a particle in a super-critical inverse square …

Analogue Hawking radiation as a tunneling in a two-level -symmetric system

B Bagchi, R Ghosh, S Sen - arxiv preprint arxiv:2304.14174, 2023 - arxiv.org
In the light of a general scenario of a two-level non-Hermitian $\mathcal {PT} $-symmetric
Hamiltonian we apply the tetrad-based method to analyze the possibility of analogue …

A weak pseudo-Hermitian two band model, artificial Hawking radiation and tunneling

B Bagchi, S Sen - arxiv preprint arxiv:2108.11648, 2021 - arxiv.org
We examine the possibility of artificial Hawking radiation by proposing a non-PT-symmetric
weakly pseudo-Hermitian two band model containing a tilting parameter. We also determine …