14 papers
Graviton localization and Newton law for a dS_4 brane in 5D bulk
A. Kehagias, K. Tamvakis
We consider an dS_4 brane embedded in a five-dimensional bulk with a positive, vanishing or negative bulk cosmological constant and derive the localized graviton spectrum that cons…
Geometric Transitions, Brane Dynamics and Gauge Theories
A. Giveon, A. Kehagias, H. Partouche
We consider the interplay between brane constructions and type IIA, IIB or M-theory geometries on Calabi-Yau (CY) and G_2 holonomy manifolds. This is related to N=1 (and N=2) gauge…
A note on brane cosmology
A. Kehagias, K. Tamvakis
We derive a new class of time-dependent solutions for the Randall-Sundrum model by patching together isometries broken by the brane. Solutions generated by generalized boosts along…
Phases of supersymmetric gauge theories from M-theory on G_2 manifolds
P. Kaste, A. Kehagias, H. Partouche
We consider M-theory on compact spaces of G_2 holonomy constructed as orbifolds of the form (CY x S^1)/Z_2 with fixed point set Σon the CY. This describes N=1 SU(2) gauge theories…
A Self-Tuning Solution of the Cosmological Constant Problem
A. Kehagias, K. Tamvakis
We discuss the four-dimensional cosmological constant problem in a five-dimensional setting. A scalar field coupled to the SM forms dynamically a smooth brane with four-dimensional…
Lattice Evidence for Gauge Field Localization on a Brane
P. Dimopoulos, K. Farakos, A. Kehagias +1
We examine the problem of gauge-field localization in higher-dimensional gauge theories. In particular, we study a five-dimensional U(1) by lattice techniques and we find that gaug…