Extended tachyon field using form invariance symmetry

Mostrar todas las versiones(2)

In this work we illustrate how form-invariance transformations (FITs) can be used to construct phantom and complementary tachyon cosmologies from standard tachyon field universes. First we show how these transformations act on the Hubble expansion rate, and the energy density and pressure of the tac...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Sánchez G., I.E.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15507998_v90_n2_p_SanchezG
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_15507998_v90_n2_p_SanchezG
record_format dspace
spelling todo:paper_15507998_v90_n2_p_SanchezG2023-10-03T16:25:02Z Extended tachyon field using form invariance symmetry Sánchez G., I.E. In this work we illustrate how form-invariance transformations (FITs) can be used to construct phantom and complementary tachyon cosmologies from standard tachyon field universes. First we show how these transformations act on the Hubble expansion rate, and the energy density and pressure of the tachyon field. Then we use the FIT to generate three different families of the tachyon field. In other words, the FIT generates new cosmologies from a known "seed" one; in particular, we apply the FIT to the ordinary tachyon field to obtain two types of tachyon species, denoted as the phantom and complementary tachyons. We see that the FIT allows us to pass from a nonstable cosmology to a stable one and vice versa. Finally, as an example, we apply the transformations to an inverse-square potential, V φ-2, and generate the extended tachyon field. © 2014 American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15507998_v90_n2_p_SanchezG
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description In this work we illustrate how form-invariance transformations (FITs) can be used to construct phantom and complementary tachyon cosmologies from standard tachyon field universes. First we show how these transformations act on the Hubble expansion rate, and the energy density and pressure of the tachyon field. Then we use the FIT to generate three different families of the tachyon field. In other words, the FIT generates new cosmologies from a known "seed" one; in particular, we apply the FIT to the ordinary tachyon field to obtain two types of tachyon species, denoted as the phantom and complementary tachyons. We see that the FIT allows us to pass from a nonstable cosmology to a stable one and vice versa. Finally, as an example, we apply the transformations to an inverse-square potential, V φ-2, and generate the extended tachyon field. © 2014 American Physical Society.
format JOUR
author Sánchez G., I.E.
spellingShingle Sánchez G., I.E.
Extended tachyon field using form invariance symmetry
author_facet Sánchez G., I.E.
author_sort Sánchez G., I.E.
title Extended tachyon field using form invariance symmetry
title_short Extended tachyon field using form invariance symmetry
title_full Extended tachyon field using form invariance symmetry
title_fullStr Extended tachyon field using form invariance symmetry
title_full_unstemmed Extended tachyon field using form invariance symmetry
title_sort extended tachyon field using form invariance symmetry
url http://hdl.handle.net/20.500.12110/paper_15507998_v90_n2_p_SanchezG
work_keys_str_mv AT sanchezgie extendedtachyonfieldusingforminvariancesymmetry
_version_ 1807321880149884928

Ejemplares similares