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Quantum coherence and criticality in irreversible work
(American Physical Society, 2020-08)
The irreversible work during a driving protocol constitutes one of the most widely studied measures in nonequilibrium thermodynamics, as it constitutes a proxy for entropy production. In quantum systems, it has been shown ...
On the theory of quantum quenches in near-critical systems
(IOP Publishing, 2020)
Quantum critical scaling at a Bose-glass/superfluid transition: Theory and experiment for a model quantum magnet
(AMER PHYSICAL SOCCOLLEGE PK, 2012)
In this paper we investigate the quantum phase transition from magnetic Bose Glass to magnetic Bose-Einstein condensation induced by amagnetic field in NiCl2 center dot 4SC(NH2)(2) (dichloro-tetrakis-thiourea-nickel, or ...
Decoherence scaling transition in the dynamics of quantum information scrambling
(American Physical Society, 2021-07)
Reliable processing of quantum information for developing quantum technologies requires precise control of out-of-equilibrium many-body systems. This is a highly challenging task because the fragility of quantum states to ...
Spontaneous spin polatization in doped semiconductor quantum wells
(Springer, 2005-12)
We calculate the critical density of the zero-temperature, first-order ferromagnetic phase transition in n-doped GaAs/AlGaAs quantum wells. We predict that this transition could be observed in narrow quantum wells at ...
Experimental consequences of quantum critical points at high temperatures
(American Physical Society, 2015-11-23)
We study the Cr1-xRex phase diagram finding that its phase transition temperature towards an antiferromagnetic order TN follows a quantum [(xc-x)/xc]ψ law, with ψ=1/2, from the quantum critical point (QCP) at xc=0.25 up ...
Inducing critical phenomena in spin chains through sparse alternating fields
(American Physical Society, 2019-01-09)
We analyze the phase diagram of the exact ground state (GS) of spin-s chains with ferromagnetic XXZ couplings under n-alternating field configurations, i.e., sparse alternating fields having nodes at n − 1 contiguous sites. ...