Spinless two-band model in infinite dimensions

Phase diagram of the Mott Transition in a two-band Hubbard model in infinite dimensions

The Mott metal-insulator transition in the two-band Hubbard model in infinite dimensions is studied by using the linearized dynamical mean-field theory recently developed by Bulla and Potthoff. The phase boundary of the metal-insulator transition is obtained analytically as a function of the onsite Coulomb interaction at the d-orbital, the charge-transfer energy between the dand p-orbitals and ...

Phase diagram of the Mott Transition in the two-band Hubbard model in infinite dimensions

The Mott metal-insulator transition in the two-band Hubbard model in infinite dimensions is studied by using the linearized dynamical mean-field theory recently developed by Bulla and Potthoff (Eur. Phys. J. B 13, (2000) 257). The phase boundary of the metal-insulator transition is obtained analytically as a function of the on-site Coulomb interaction at the d-orbital, the charge-transfer energ...

Infinite Frameworks in Two Dimensions

Phenomenology of spinless adjoints in two Universal Extra Dimensions

We discuss the phenomenology of (1, 1)-mode adjoint scalars in the framework of two Universal Extra Dimensions. The Kaluza-Klein (KK) towers of these adjoint scalars arise in the 4-dimensional effective theory from the 6th component of the gauge fields after compactification. Adjoint scalars can have KK-number conserving as well as KK-number violating interactions. We calculate the KK-number vi...

Spinless photon dark matter from two universal extra dimensions

We explore the properties of dark matter in theories with two universal extra dimensions, where the lightest Kaluza-Klein state is a spin-0 neutral particle, representing a six-dimensional photon polarized along the extra dimensions. Annihilation of this ‘spinless photon’ proceeds predominantly through Higgs boson exchange, and is largely independent of other Kaluza-Klein particles. The measure...