154 citations · 1.1k across the 83 of their papers we have counts for
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Finite temperature effects in quantum systems with competing scalar orders
Nei Lopes, Daniel G. Barci, Mucio A. Continentino
The study of the competition or coexistence of different ground states in many-body systems is an exciting and actual topic of research, both experimentally and theoretically. Quan…
Multi-critical Behavior in Topological Phase Transitions
S. Rufo, Nei Lopes, Mucio A. Continentino +1
Topological phase transitions can be described by the theory of critical phenomena and identified by critical exponents that define their universality classes. This is a consequenc…
Influence of the symmetry of the hybridization on the critical temperature of multi-band superconductors
Daniel Reyes, Nei Lopes, Mucio A. Continentino +1
In this work we study a two-band model of a superconductor in a square lattice. One band is narrow in energy and includes local Coulomb correlations between its quasi-particles. Pa…
One-loop effective potential for two-dimensional competing scalar order parameters
Nei Lopes, Mucio A. Continentino, Daniel G. Barci
Using the method of the effective potential of quantum field theory, we compute the quantum corrections to the phase diagram of systems with competing order parameters. This is spe…
Finite Size Effects in Topological Quantum Phase Transitions
Mucio A. Continentino, Sabrina Rufo, Griffith M. Rufo
The interest in the topological properties of materials brings into question the problem of topological phase transitions. As a control parameter is varied, one may drive a system…