Bloch Brane

Bloch Brane

We investigate a system described by two real scalar fields coupled with gravity in (4, 1) dimensions in warped spacetime involving one extra dimension. The results show that the parameter which controls the way the two scalar fields interact induces the appearence of thick brane which engenders internal structure, driving the energy density to localize inside the brane in a very specific way.

Triviality of Bloch and Bloch-Dirac bundles

In the framework of the theory of an electron in a periodic potential, we reconsider the longstanding problem of the existence of smooth and periodic quasi-Bloch functions, which is shown to be equivalent to the triviality of the Bloch bundle. By exploiting the time-reversal symmetry of the Hamiltonian and some bundle-theoretic methods, we show that the problem has a positive answer in any dime...

Brane necklaces and brane coils

We investigate D-term strings in angled inflation and show how they could be distinguished from conventional cosmic strings. In angled inflation, D-term strings are Dp−2 branes that are extended between Dp branes. The Dp−2 brane has a flat direction in compactified space, along which the endpoint of the Dp−2 brane can move freely on the Dp brane. Then naturally the position of the Dp−2 brane co...

Bloch equations_FF

Non - BPS Dp - Brane In Dk - Brane

In this paper we will study the dynamics of a non-BPS Dp-brane in the background of N BPS Dk-branes.