Viscosity, entanglement and acceleration
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916629775908864 |
|---|---|
| author | Lapygin, Dmitry D. Prokhorov, Georgy Yu. Teryaev, Oleg V. Zakharov, Valentin I. |
| author_facet | Lapygin, Dmitry D. Prokhorov, Georgy Yu. Teryaev, Oleg V. Zakharov, Valentin I. |
| contents | The Minkowski vacuum in an accelerated frame behaves like a fluid that has not only a finite temperature due to the Unruh effect, but also a finite shear viscosity. Moreover, the ratio of this viscosity to the entropy density exactly satisfies the Kovtun-Son-Starinets (KSS) bound, inspired by the string theory $ η/s=1/4π$. The origin of this viscosity is purely kinematical and is believed to be related to entanglement introduced by the Rindler horizon. We directly calculate the viscosity, entropy density, and their ratio for massless fields with spins 1/2 and 1. We show that locally the ratio of viscosity to entropy density can be below the limiting value $ 1/4π$ at distances of the order of the thickness of the membrane corresponding to the stretched horizon, and is described by the universal function for different spins. In particular, on the membrane surface $ η/s=1/8π$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_18199 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Viscosity, entanglement and acceleration Lapygin, Dmitry D. Prokhorov, Georgy Yu. Teryaev, Oleg V. Zakharov, Valentin I. High Energy Physics - Theory General Relativity and Quantum Cosmology The Minkowski vacuum in an accelerated frame behaves like a fluid that has not only a finite temperature due to the Unruh effect, but also a finite shear viscosity. Moreover, the ratio of this viscosity to the entropy density exactly satisfies the Kovtun-Son-Starinets (KSS) bound, inspired by the string theory $ η/s=1/4π$. The origin of this viscosity is purely kinematical and is believed to be related to entanglement introduced by the Rindler horizon. We directly calculate the viscosity, entropy density, and their ratio for massless fields with spins 1/2 and 1. We show that locally the ratio of viscosity to entropy density can be below the limiting value $ 1/4π$ at distances of the order of the thickness of the membrane corresponding to the stretched horizon, and is described by the universal function for different spins. In particular, on the membrane surface $ η/s=1/8π$. |
| title | Viscosity, entanglement and acceleration |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2502.18199 |