Results 51 to 60 of about 556 (164)

Toroidal Orbifolds: Resolutions, Orientifolds and Applications in String Phenomenology [PDF]

, 2006
As of now, string theory is the best candidate for a theory of quantum gravity. Since it is anomaly–free only in ten space-time dimensions, the six surplus spatial dimensions must be compactified.
Reffert, Susanne / S.
core   +1 more source

The dynamics of three-forms in thick branes

Journal of High Energy Physics
In this work, we investigate thick brane models with a single three-form field. We find novel solutions for thick braneworlds where only three-forms exist and interact gravitationally in the bulk, both with and without matter fields. We use an additional
Jake E. B. Gordin, Kelly MacDevette, Jenna Bruton   +2 more
doaj   +1 more source

Traces of Extra Dimensions in Cosmology [PDF]

, 2010
In this thesis, we discuss the observational consequences of extra dimensions on cosmological phenomena. We begin with an overview of extra dimensions, from the initial ideas of Kaluza and Klein to the more recent concept of braneworld models and in ...
O'Callaghan, Eimear Eileen, O'CALLAGHAN, EIMEAR,EILEEN   +1 more
core  

Emergence of R 4-terms in M-theory

Journal of High Energy Physics
It has been recently suggested that the strong Emergence Proposal is realized in M-theory limits by integrating out all light towers of states with a typical mass scale not larger than the species scale, i.e. the eleventh dimensional Planck mass.
Ralph Blumenhagen, Niccolò Cribiori, Aleksandar Gligovic, Antonia Paraskevopoulou   +3 more
doaj   +1 more source

Phenomenology of strong interactions: towards an effective theory for low energy QCD

European Physical Journal C: Particles and Fields, 2023
In this paper, we develop models applicable to phenomenological particle physics by using the string analogy of particles. These theories can be used to investigate the phenomenology of confinement, deconfinement, chiral condensate, QGP phase transitions,
Adamu Issifu, Francisco A. Brito
doaj   +1 more source

The cosmological constant and the weak gravity conjecture

Journal of High Energy Physics
We examine the descent via membrane nucleation through a landscape of vacua where the cosmological constant is given by a combination of four-form fluxes.
Yang Liu, Antonio Padilla, Francisco G. Pedro   +2 more
doaj   +1 more source

Type IIA string theory on T 6/(Z2 × Z6 × OmegaR) : model building and string phenomenology with intersecting D6-branes

, 2016
In this doctoral thesis, various aspects of string model building and phenomenology are investigated within the framework of Type IIA string theory on the T 6/(Z2 × Z6 × ΩR) orbifold with discrete torsion. The aim is the reproduction of supersymmetric versions of well-known particle physics models using intersecting rigid D6-branes wrapped on ...
openaire   +2 more sources

Geometry of black holes and braneworlds in higher dimensions [PDF]

, 2004
This tliesis first discusses braneworld models, we explain how the bulk geometry in codimension 2 scenarios restricts braneworld fields in a way inconsistent with observation.
Paul B. Bostock, Bostock, Paul B, Bostock, Paul B.   +2 more
core  

Gauge coupling unification in E 6 F-theory GUTs with matter and bulk exotics from flux breaking

, 2013
We consider gauge coupling unification in E 6 F-Theory Grand Unified Theories (GUTs) where E 6 is broken to the Standard Model (SM) gauge group using fluxes. In such models there are two types of exotics that can affect gauge coupling unification, namely
King, Stephen F., Leontaris, George K., Callaghan, James C.   +2 more
core   +1 more source

LREE of a dressed Dp-brane with transverse motion in the partially compact spacetime

Journal of High Energy Physics
In the context of the type IIA/IIB superstring theories, we derive the left-right entanglement entropy (LREE) of a BPS Dp-brane with transverse motion in the presence of a U(1) gauge potential and the Kalb-Ramond field in the partially compact spacetime ...
Hamidreza Daniali, Davoud Kamani
doaj   +1 more source