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Variational time reversal for free-energy estimation in nonequilibrium steady states
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Active Contact Forces Drive Nonequilibrium Fluctuations in Membrane Vesicles
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Nonequilibrium Attractor in High-Temperature QCD Plasmas
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Witnessing Nonequilibrium Entanglement Dynamics in a Strongly Correlated Fermionic Chain
Many-body entanglement in condensed matter systems can be diagnosed from equilibrium response functions through the use of entanglement witnesses and operator-specific quantum bounds. Here, we investigate the applicability of this approach for detecting entangled states in quantum systems driven out of equilibrium. We use a multipartite entanglement witness, the quantum Fisher information, to study the dynamics of a paradigmatic fermion chain undergoing a time-dependent change of the Coulomb interaction. Our results show that the quantum Fisher information is able to witness distinct signatures of multipartite entanglement both near and far from equilibrium that are robust against decoherence. Here, we discuss implications of these findings for probing entanglement in light-driven quantum materials with time-resolved optical and x-ray scattering methods.
Soluble Model of a Nonequilibrium Steady State: The Van Kampen Objection and Other Lessons
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Nonequilibrium states of a plasmonic Dicke model with coherent and dissipative surface-plasmon–quantum-emitter interactions
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Nonequilibrium thermodynamics of erasure with superconducting flux logic
We implement a thermal-fluctuation-driven logical bit reset on a superconducting flux logic cell. We show that the logical state of the system can be continuously monitored with only a small perturbation to the thermally activated dynamics at 500 mK. We use the trajectory information to derive a single-shot estimate of the work performed on the system per logical cycle. We acquire a sample of 10 5 erasure trajectories per protocol and show that the work histograms agree with both microscopic theory and global fluctuation theorems. The results demonstrate how to design and diagnose complex, high-speed, and thermodynamically efficient computing using superconducting technology.
Renormalized Lindblad driving: A numerically exact nonequilibrium quantum impurity solver
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Nonequilibrium dissociative dynamics of D 2 in two-color, few-photon excitation and ionization
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Nonequilibrium phase transition in a driven-dissipative quantum antiferromagnet
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Jarzynski-like equality of nonequilibrium information production based on quantum cross-entropy
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Network structure and dynamics of effective models of nonequilibrium quantum transport
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Nonequilibrium Fixed Points of Coupled Ising Models
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Higgs-Mediated Optical Amplification in a Nonequilibrium Superconductor
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Thermally induced structural competitiveness and metastability of body-centered-cubic iron under nonequilibrium conditions
The structure and stability of iron near melting at multi-megabar pressures are of significant interest in high pressure physics and earth and planetary sciences. While the body-centered cubic (BCC) phase is generally recognized as unstable at lower temperatures, its stability relative to the hexagonal close-packed (HCP) phase at high temperatures (approximately 0.5 eV) in the Earth’s inner core (IC) remains a topic of ongoing theoretical and experimental debate. Motivated by a series of studies attempting to understand the state of the IC and resulting in contradictory findings, we aim to explore the physical factors that may contribute to this confusion in a broader context. Our ab initio calculations show a significant drop in energy, the emergence of a plateau and a local minimum in the potential energy surface, and stabilization of all phonon modes of BCC iron at elevated electron temperatures (>1–1.5 eV). These effects increase the competition among the BCC, HCP, and the face-centered cubic (FCC) phases and lead to the metastability of the BCC structure. Furthermore, at pressure-temperature conditions relevant to the IC, we can expect substantial coexistence of FCC and HCP iron due to their similar free energies and low transition barrier (∼0.2 eV/atom), and the thermodynamic stability of BCC iron is enhanced by its substantial lattice vibration entropy. In conclusion, these findings provide a clear theoretical framework for understanding iron phase relations and solidification processes, both experimentally and in the IC.