Different scenarios of topological phase transitions in homogeneous neutron matter

Superfluid phase transitions in dense neutron matter.

The phase transitions in a realistic system with triplet pairing, dense neutron matter, have been investigated. The spectrum of phases of the 3P2-3F2 model, which adequately describes pairing in this system, is analytically constructed with the aid of a separation method for solving BCS gap equations in states of arbitrary angular momentum. In addition to solutions involving a single value of t...

Topological Aspects of Phase Transitions

In the past decade and a half, an alternative analysis of phase transitions, based in the topological behavior of system configuration spaces, has been introduced. This method offers a new understanding of many phase transitions, particularly those in finite systems, using topology and manifold behavior. While the broadest hypotheses offered by researchers have proven overly optimistic, the met...

Phase transitions in nuclear matter

A method for the description of spin-isospin phase transitions in nuclear matter is developed. It aliows a complete description of the pion condensation phase transition in the framework of the Landau-Migdal Fermi liquid theory. The equation of the order Parameter is derived and the condensation energy is calculated. We study the influence of pion condensation on the nuclear equation of state a...

Topological Phase Transitions in Multicomponent Superconductors.

We study the phase transition between a trivial and a time-reversal-invariant topological superconductor in a single-band system. By analyzing the interplay of symmetry, topology, and energetics, we show that for a generic normal state band structure, the phase transition occurs via extended intermediate phases in which even- and odd-parity pairing components coexist. For inversion-symmetric sy...

Topological transitions in Berry's phase interference effects.