| dc.creator | Franchino Viñas, Sebastián Alberto | |
| dc.creator | Mazzitelli, Francisco Diego | |
| dc.date | 2021-03 | |
| dc.date | 2022-10-11T17:54:43Z | |
| dc.date.accessioned | 2023-07-15T05:13:22Z | |
| dc.date.available | 2023-07-15T05:13:22Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/143583 | |
| dc.identifier | issn:2470-0010 | |
| dc.identifier | issn:2470-0029 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7472545 | |
| dc.description | We study the vacuum fluctuations of a quantum scalar field in the presence of a thin and inhomogeneous flat mirror, modelled with a delta potential. Using Heat-Kernel techniques, we evaluate the Euclidean effective action perturbatively in the inhomogeneities (nonperturbatively in the constant background). We show that the divergences can be absorbed into a local counterterm, and that the remaining finite part is in general a nonlocal functional of the inhomogeneities, which we compute explicitly for massless fields in D = 4 dimensions. For time-independent inhomogeneities, the effective action gives the Casimir self-energy for a partially transmitting mirror. For time-dependent inhomogeneites, the Wick-rotated effective action gives the probability of particle creation due to the dynamical Casimir effect. | |
| dc.description | Facultad de Ciencias Exactas | |
| dc.format | application/pdf | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
| dc.subject | Ciencias Exactas | |
| dc.subject | Física | |
| dc.subject | vacuum fluctuations | |
| dc.subject | inhomogeneities | |
| dc.title | Effective action for delta potentials: Spacetime-dependent inhomogeneities and Casimir self-energy | |
| dc.type | Articulo | |
| dc.type | Articulo | |
