Unexpected transitional paths in the prolate to oblate shape phase transitions for Bose–Fermi systems

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
M. Böyükata ◽  
C. E. Alonso ◽  
J. M. Arias ◽  
L. Fortunato ◽  
A. Vitturi
Keyword(s):  
Phase Transitions ◽  
Fermi Systems ◽  
Oblate Shape

scholarly journals Erratum to: Unexpected transitional paths in the prolate to oblate shape phase transitions for Bose–Fermi systems

2021 ◽  
Vol 57 (10) ◽  
Author(s):  
M. Böyükata ◽  
C. E. Alonso ◽  
J. M. Arias ◽  
L. Fortunato ◽  
A. Vitturi
Keyword(s):  
Phase Transitions ◽  
Fermi Systems ◽  
Oblate Shape

Quantum field theory of phase transitions in Fermi systems

1968 ◽  
Vol 17 (68) ◽  
pp. 509-562 ◽  
Author(s):  
R.D. Mattuck ◽  
Börje Johansson
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Phase Transitions ◽  
Quantum Field ◽  
Fermi Systems

scholarly journals Quantum phase transitions in Bose–Fermi systems

2011 ◽  
Vol 326 (4) ◽  
pp. 926-957 ◽  
Author(s):  
D. Petrellis ◽  
A. Leviatan ◽  
F. Iachello
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Fermi Systems

scholarly journals Prolate-to-oblate shape phase transitions in neutron-rich odd-mass nuclei

2018 ◽  
Vol 97 (6) ◽  
Author(s):  
K. Nomura ◽  
R. Rodríguez-Guzmán ◽  
L. M. Robledo
Keyword(s):  
Phase Transitions ◽  
Oblate Shape

scholarly journals Quantum shape phase transitions from spherical to deformed for Bose-Fermi systems: the effect of the odd particle around the critical point

2014 ◽  
Vol 66 ◽  
pp. 02014 ◽  
Author(s):  
M. Böyükata ◽  
C. E. Alonso ◽  
J. M. Arias ◽  
L. Fortunato ◽  
A. Vitturi
Keyword(s):  
Phase Transitions ◽  
Critical Point ◽  
Fermi Systems

TOPOLOGICAL PHASE TRANSITIONS IN STRONGLY CORRELATED FERMI SYSTEMS

2009 ◽  
Vol 23 (20n21) ◽  
pp. 4059-4073 ◽  
Author(s):  
J. W. CLARK ◽  
V. A. KHODEL ◽  
M. V. ZVEREV
Keyword(s):  
Phase Transitions ◽  
Fermi Surface ◽  
Critical Point ◽  
Chemical Potential ◽  
Quantum Critical Point ◽  
Strongly Correlated ◽  
Topological Phase ◽  
Fermi Systems ◽  
Quantum Critical ◽  
Topological Phase Transitions

Opportunities for topological phase transitions in strongly correlated Fermi systems near a quantum critical point are explored as an alternative to collective scenarios for experimentally observed departures from standard Fermi-liquid behavior. Attention is focused on a quantum critical point at which the effective mass is divergent due to vanishing of the quasiparticle group velocity at the Fermi surface. Working within the original Landau quasiparticle theory, it is demonstrated that the quasiparticle picture can remain meaningful beyond the quantum critical point through rearrangements of the unstable normal Fermi surface and quasiparticle spectrum. Two possibilities emerge at zero temperature, depending on whether the quasiparticle interaction is regular or singular at zero momentum transfer. In the regular case, one type of topological phase transformation leads to a state with a multiconnected Fermi surface. In the singular case, another type of topological phase transition leads to an exceptional state containing a fermion condensate – the Fermi surface swells into a volume in momentum space, within which partial occupation prevails and quasiparticle energies are pinned to the chemical potential. As the temperature increases from zero to a characteristic value Tm, a crossover can occur from the state with multiple Fermi surfaces to that containing a fermion condensate.

Sign in / Sign up

Export Citation Format

Share Document