Submissions from D. A. White

[1]  faKiv:2404.08282 [pdf]

Holographic entanglement entropy

Y. M. Do, Y. M. Do, D. A. White

Comments: 5 pages, 4 figures

We study entanglement entropy in the presence of the heat and magnetic fields in the holographic model. Since the heat and magnetic fields are mixed in the holographic model and the heat field is mixed in the holographic model, we find that the entanglement entropy of the holographic model is also proportional to the temperature and the magnetic fields. We also examine the entanglement entropy in the presence of the heat and the magnetic fields in the holographic model. The entanglement entropy decreases towards the heat-field, but increases towards the magnetic fields.

[2]  faKiv:2404.08782 [pdf]

Non-perturbative approach to the Weyl-Fujikawa equation in a cosmological background

J. M. Harrison, D. A. White, A. M. G. Morley

Comments: 32 pages, 6 figures

We study a perturbative approach to solving the Weyl-Fujikawa equation (WFDE) in the cosmological background of a $2+1$-dimensional $AdS$-like Einstein-Hilbert model with a non-perturbative causal structure. The non-perturbative approach is a simple, non-perturbative formulation of the weyl-Fujikawa equation in a hydrodynamic approximation. We first investigate the perturbative parameter which is normally determined by the Weyl-Fujikawa equation. It is shown that our perturbative approach is equivalent to the perturbative approach in the hydrodynamic approximation. We comment on the implications of our results for the interpretation of the Higgs-Dirac equation in the cosmological background.