Hybrid inflation and waterfall field in string theory from D7-branes
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2022)011
Abstract: We present an explicit string realisation of a cosmological inflationary scenario we proposed recently within the framework of type IIB flux compactifications in the presence of three magnetised D 7-brane stacks. Inflation takes place around… read more here.
Keywords: inflation waterfall; inflation; string theory; waterfall field ... See more keywords
String theory integrands and supergravity divergences
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2019)148
Abstract: A bstractAt low energies, interactions of massless particles in type II strings compactified on a torus Td are described by an effective Wilsonian action S$$ \mathcal{S} $$(Λ), consisting of the usual supergravity Lagrangian supplemented by… read more here.
Keywords: theory integrands; supergravity divergences; supergravity; integrands supergravity ... See more keywords
Spontaneous dark-matter mass generation along cosmological attractors in string theory
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DOI: 10.1007/jhep03(2019)117
Abstract: A bstractWe propose a new scenario for generating a relic density of non-relativistic dark matter in the context of heterotic string theory. Contrary to standard thermal freeze-out scenarios, dark-matter particles are abundantly produced while still… read more here.
Keywords: spontaneous dark; dark matter; mass; string theory ... See more keywords
On the stability of string theory vacua
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2022)054
Abstract: Abstract Vacuum compactifications may suffer from instabilities under small perturbations or tunnel effects; both are difficult to analyze. In this paper we consider the issue from a higher-dimensional perspective. We first look at how stability… read more here.
Keywords: stability; vacua; string theory; theory vacua ... See more keywords
Dynamical black holes in low-energy string theory
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2017)035
Abstract: A bstractWe investigate time-dependent spherically symmetric solutions of the four-dimensional Einstein-Maxwell-axion-dilaton system, with the dilaton coupling that occurs in low-energy effective heterotic string theory. A class of dilaton-electrovacuum radiating solutions with a trivial axion, previously… read more here.
Keywords: energy string; black holes; energy; dilaton ... See more keywords
Intrinsic non-commutativity of closed string theory
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep09(2017)060
Abstract: A bstractWe show that the proper interpretation of the cocycle operators appearing in the physical vertex operators of compactified strings is that the closed string target is noncommutative. We track down the appearance of this… read more here.
Keywords: non commutativity; commutativity closed; string theory; commutativity ... See more keywords
String theory at order α′2 and the generalized Bergshoeff-de Roo identification
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep11(2021)186
Abstract: Abstract It has been shown by Marques and Nunez that the first α′-correction to the bosonic and heterotic string can be captured in the O(D, D) covariant formalism of Double Field Theory via a certain… read more here.
Keywords: string theory; bergshoeff roo; roo identification;
Rational sphere valued supercocycles in M-theory and type IIA string theory
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geometry and Physics"
DOI: 10.1016/j.geomphys.2016.11.024
Abstract: Abstract We show that supercocycles on super L ∞ -algebras capture, at the rational level, the twisted cohomological charge structure of the fields of M -theory and of type IIA string theory. We show that… read more here.
Keywords: type iia; iia string; string theory; sphere valued ... See more keywords
A string theory of flavor and CP
Sign Up to like & getrecommendations! Published in 2019 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2019.114737
Abstract: Modular transformations of string theory (including the well-known stringy dualities) play a crucial role in the discussion of discrete flavor symmetries in the Standard Model. They are at the origin of CP transformations and provide… read more here.
Keywords: flavor; theory flavor; string theory;
Non-geometric backgrounds in string theory
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DOI: 10.1016/j.physrep.2018.12.002
Abstract: Abstract This review provides an introduction to non-geometric backgrounds in string theory. Starting from a discussion of T-duality, geometric and non-geometric torus-fibrations are reviewed, generalised geometry and its relation to non-geometric backgrounds are explained and… read more here.
Keywords: geometric backgrounds; backgrounds string; string theory; geometry ... See more keywords
String theory methods for condensed matter physics
Sign Up to like & getrecommendations! Published in 2018 at "Contemporary Physics"
DOI: 10.1080/00107514.2018.1515260
Abstract: skyrmions makes them highly stable entities, allowing individual skyrmions to be used to store information. One of the chapters in this book is devoted to so-called racetrackmemory devices which can implement skyrmion technology and which… read more here.
Keywords: methods condensed; string theory; physics; theory methods ... See more keywords