Gravity localization in sine-Gordon braneworlds

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• 作者：W.T. Cruz^b ; ^{wilamicruz@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; R.V. Maluf^a ; ^{r.v.maluf@fisica.ufc.br" class="auth_mail" title="E-mail the corresponding author} ; L.J.S. Sousa^c ; ^{luisjose@fisica.ufc.br" class="auth_mail" title="E-mail the corresponding author} ; C.A.S. Almeida^a ; ^{carlos@fisica.ufc.br" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Sine-Gordon moldes ; Braneworlds ; Gravity localization ; Resonant states ; Massive states ; Thick brane
• 刊名：Annals of Physics
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：364
• 期：Complete
• 页码：25-34
• 全文大小：656 K

文摘

In this work we study two types of five-dimensional braneworld models given by sine-Gordon potentials. In both scenarios, the thick brane is generated by a real scalar field coupled to gravity. We focus our investigation on the localization of graviton field and the behaviour of the massive spectrum. In particular, we analyse the localization of massive modes by means of a relative probability method in a Quantum Mechanics context. Initially, considering a scalar field sine-Gordon potential, we find a localized state to the graviton at zero mode. However, when we consider a double sine-Gordon potential, the brane structure is changed allowing the existence of massive resonant states. The new results show how the existence of an internal structure can aid in the emergence of massive resonant modes on the brane.