Influence of weak frustration on quench dynamics of 1D spin-1/2 ANNNI model

2020 ◽  
Vol 497 ◽  
pp. 166078 ◽  
Author(s):  
Hadi Cheraghi ◽  
Majid Jafar Tafreshi ◽  
Saeed Mahdavifar
Keyword(s):  
Annni Model ◽  
Quench Dynamics

scholarly journals More on complex Sachdev-Ye-Kitaev eternal wormholes

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Pengfei Zhang
Keyword(s):  
Black Hole ◽  
Ground State ◽  
Effective Action ◽  
Chemical Potential ◽  
Specific Charge ◽  
Zero Temperature ◽  
Small Coupling ◽  
Chemical Potentials ◽  
Quench Dynamics ◽  
Two Sides

Abstract In this work, we study a generalization of the coupled Sachdev-Ye-Kitaev (SYK) model with U(1) charge conservations. The model contains two copies of the complex SYK model at different chemical potentials, coupled by a direct hopping term. In the zero-temperature and small coupling limit with small averaged chemical potential, the ground state is an eternal wormhole connecting two sides, with a specific charge Q = 0, which is equivalent to a thermofield double state. We derive the conformal Green’s functions and determine corresponding IR parameters. At higher chemical potential, the system transit into the black hole phase. We further derive the Schwarzian effective action and study its quench dynamics. Finally, we compare numerical results with the analytical predictions.

scholarly journals Interacting bosonic flux ladders with a synthetic dimension: Ground-state phases and quantum quench dynamics

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
Maximilian Buser ◽  
Claudius Hubig ◽  
Ulrich Schollwöck ◽  
Leticia Tarruell ◽  
Fabian Heidrich-Meisner
Keyword(s):  
Ground State ◽  
Quantum Quench ◽  
Quench Dynamics ◽  
Ground State Phases

scholarly journals Probing non-Hermitian phase transitions in curved space via quench dynamics

2021 ◽  
Vol 103 (15) ◽  
Author(s):  
Ygor Pará ◽  
Giandomenico Palumbo ◽  
Tommaso Macrì
Keyword(s):  
Phase Transitions ◽  
Curved Space ◽  
Quench Dynamics

scholarly journals Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions

2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Elmer Guardado-Sanchez ◽  
Benjamin M. Spar ◽  
Peter Schauss ◽  
Ron Belyansky ◽  
Jeremy T. Young ◽  
...  
Keyword(s):  
Fermi Gas ◽  
Nonlocal Interactions ◽  
Quench Dynamics

scholarly journals Magnetic properties and quench dynamics of two interacting ultracold molecules in a trap

2020 ◽  
Vol 22 (48) ◽  
pp. 28140-28153
Author(s):  
Anna Dawid ◽  
Michał Tomza
Keyword(s):  
Magnetic Properties ◽  
Internal Structure ◽  
Nonequilibrium Dynamics ◽  
External Fields ◽  
Ultracold Molecules ◽  
Quench Dynamics

The interplay of external fields and internal structure of two interacting ultracold trapped molecules produces rich magnetization diagrams and nonequilibrium dynamics.

FRUSTRATED TRANSVERSE ISING MODELS: A CLASS OF FRUSTRATED QUANTUM SYSTEMS

1992 ◽  
Vol 06 (14) ◽  
pp. 2439-2469 ◽  
Author(s):  
P. SEN ◽  
B. K. CHAKRABARTI
Keyword(s):  
Excited States ◽  
Transverse Field ◽  
Ising Models ◽  
Quantum Systems ◽  
Nearest Neighbour ◽  
Competing Interactions ◽  
Annni Model ◽  
Kirkpatrick Model ◽  
Transverse Fields ◽  
Exact Diagonalisation

The analytical and numerical (Monte Carlo and exact diagonalisation) estimates of phase diagrams of frustrated Ising models in transverse fields are discussed here. Specifically we discuss the Sherrington–Kirkpatrick model in transverse field and the Axial Next-Nearest Neighbour Ising (ANNNI) model in transverse field. The effects of quantum fluctuations (induced by the transverse field) on the ground and excited states of such systems with competing interactions (frustration) are also discussed. The results are compared to those available for other frustrated quantum systems.

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