Results 91 to 100 of about 440 (160)

The dynamics of cosmological scenarios inspired by quantum gravity

, 2006
PhDIn this thesis we study the dynamics of cosmological scenarios inspired by quantum gravity. Part I investigates novel features of the semi-classical regime of homogeneous and isotropic loop quantum cosmology.
Mulryne, David James
core  

Topology change and non-geometry at infinite distance

Journal of High Energy Physics
The distance conjecture diagnoses viable low-energy effective realisations of consistent theories of quantum gravity by examining their breakdown at infinite distance in their parameter space. At the same time, infinite distance points in parameter space
Saskia Demulder, Dieter Lüst, Thomas Raml   +2 more
doaj   +1 more source

String perturbation theory of Klebanov-Strassler throat

Journal of High Energy Physics
In this work, we develop a tool to study string perturbation theory of the Klebanov-Strassler solution in the large radius approximation based on open-closed superstring field theory.
Manki Kim
doaj   +1 more source

Singular lensing from the scattering on special space-time defects. [PDF]

Eur Phys J C Part Fields, 2018
Mavromatos NE, Papavassiliou J.
europepmc   +1 more source

Modular forms and hierarchical Yukawa couplings in heterotic Calabi-Yau compactifications

Journal of High Energy Physics
We study the modular symmetry in heterotic string theory on Calabi-Yau threefolds. In particular, we examine whether moduli-dependent holomorphic Yukawa couplings are described by modular forms in the context of heterotic string theory with standard ...
Keiya Ishiguro, Tatsuo Kobayashi, Satsuki Nishimura, Hajime Otsuka   +3 more
doaj   +1 more source

Light and compressed gluinos at the LHC via string theory. [PDF]

Eur Phys J C Part Fields, 2017
AbdusSalam SS.
europepmc   +1 more source

Quark masses and mixing in string-inspired models

Journal of High Energy Physics
We study a class of supersymmetric Froggatt-Nielsen (FN) models with multiple U(1) symmetries and Standard Model (SM) singlets inspired by heterotic string compactifications on Calabi-Yau threefolds.
Andrei Constantin, Cristofero S. Fraser-Taliente, Thomas R. Harvey, Lucas T. Y. Leung, Andre Lukas   +4 more
doaj   +1 more source

Graviton propagation within the context of the D-material universe. [PDF]

Eur Phys J C Part Fields, 2017
Elghozi T, Mavromatos NE, Sakellariadou M.   +2 more
europepmc   +1 more source

D-Brane Physics: From Weak to Strong Coupling [PDF]

, 2013
In this thesis we discuss two aspects of branes relevant to high-energy phenomenology. First, we consider a single D6-brane wrapping a special Lagrangian cycle and the background space compactified in a Calabi-Yau orientifold the conditions needed to ...
Ordine Vieira Lopes, Daniel
core  

Confined monopoles and failure of the Lattice Weak Gravity Conjecture

Journal of High Energy Physics
Almost all known theories of quantum gravity satisfy the Lattice Weak Gravity Conjecture (LWGC), which posits that a consistent theory of quantum gravity must have a superextremal particle at every site in the charge lattice.
Muldrow Etheredge, Ben Heidenreich, Nicholas Pittman, Sebastian Rauch, Matthew Reece, Tom Rudelius   +5 more
doaj   +1 more source