Higgs vacuum stability and inflationary dynamics after BICEP2 and PLANCK dust polarisation data

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dc.contributor.author Bhattacharya, Kaushik
dc.contributor.author Chakrabortty, Joydeep
dc.contributor.author Das, Suratna
dc.contributor.author Mondal, Tanmoy
dc.date.accessioned 2014-12-15T10:20:58Z
dc.date.available 2014-12-15T10:20:58Z
dc.date.issued 2014-12
dc.identifier.citation Bhattacharya, Kaushik; Chakrabortty, Joydeep; Das, Suratna and Mondal, Tanmoy, “Higgs vacuum stability and inflationary dynamics after BICEP2 and PLANCK dust polarisation data”, Journal of Cosmology and Astroparticle Physics, DOI: 10.1088/1475-7516/2014/12/001, Dec. 2014. en_US
dc.identifier.issn 1475-7516
dc.identifier.uri http://dx.doi.org/10.1088/1475-7516/2014/12/001
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1497
dc.description.abstract If the recent detection of B-mode polarization of the Cosmic Microwave Background by BICEP2 observations, withstand the test of time after the release of recent PLANCK dust polarisation data, then it would surprisingly put the inflationary scale near Grand Unification scale if one considers single-field inflationary models. On the other hand, Large Hadron Collider has observed the elusive Higgs particle whose presently observed mass can lead to electroweak vacuum instability at high scale (~ Script O(1010) GeV). In this article, we seek for a simple particle physics model which can simultaneously keep the vacuum of the theory stable and yield high-scale inflation successfully. To serve our purpose, we extend the Standard Model of particle physics with a U(1)B-L gauged symmetry which spontaneously breaks down just above the inflationary scale. Such a scenario provides a constrained parameter space where both the issues of vacuum stability and high-scale inflation can be successfully accommodated. The threshold effect on the Higgs quartic coupling due to the presence of the heavy inflaton field plays an important role in keeping the electroweak vacuum stable. Furthermore, this scenario is also capable of reheating the universe at the end of inflation. Though the issues of Dark Matter and Dark Energy, which dominate the late-time evolution of our universe, cannot be addressed within this framework, this model successfully describes the early universe dynamics according to the Big Bang model. en_US
dc.description.statementofresponsibility by Kaushik Bhattacharyaa, Joydeep Chakraborttya, Suratna Dasa and Tanmoy Mondalb
dc.format.extent vol. 2014, no. 12
dc.language.iso en en_US
dc.publisher IOP Science en_US
dc.subject Inflation en_US
dc.subject Neutrino properties en_US
dc.subject Particle physics - cosmology connection en_US
dc.subject Physics of the early universe en_US
dc.title Higgs vacuum stability and inflationary dynamics after BICEP2 and PLANCK dust polarisation data en_US
dc.type Article en_US
dc.relation.journal Journal of Cosmology and Astroparticle Physics

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