We analytically establish, for spinor gases with strong repulsive contact interactions at a finite temperature, that the momentum distribution asymptotically approaches that of a spinless fermion system at the same temperature, with a renormalized chemical potential determined by the number of components within the spinor system, post-trap release. The Gaudin-Yang model's analytical predictions are verified numerically via a nonequilibrium extension of Lenard's formula, providing insights into the temporal evolution of field-field correlators.
A spintronics-inspired study of a uniaxial nematic electrolyte unveils the reciprocal relationship between nematic texture dynamics and ionic charge currents. Quenched fluid dynamics allows us to develop equations of motion analogous to those derived for spin torque and spin pumping. Based on the minimal energy dissipation principle, the adiabatic nematic torque exerted by ionic currents upon the nematic director field and the reciprocal force on ions induced by the director's orientational dynamics are established. Illustrative, basic examples are considered, elucidating the possible functionalities of this linking. Using our phenomenological framework, we additionally propose a practical means of extracting the coupling strength from impedance measurements conducted on a nematic display cell. Further exploration of this physics' potential applications could spur the creation of nematronics-nematic iontronics.
A closed-form expression is obtained for the Kähler potential of a wide class of four-dimensional Lorentzian or Euclidean conformal Kähler geometries, specifically encompassing the Plebański-Demiański class and instances like the Fubini-Study and Chen-Teo gravitational instantons. Our research establishes a connection between the Kähler potentials of Schwarzschild and Kerr black holes, specifically through the application of a Newman-Janis shift. Our methodology further demonstrates that a category of supergravity black holes, encompassing the Kerr-Sen spacetime, exhibits Hermitian properties. We establish a natural link between the integrability conditions of complex structures and the Weyl double copy.
A cavity-BEC system, both pumped and shaken, showcases the development of a condensate in a dark momentum configuration. A high-finesse cavity houses an ultracold quantum gas, transversely pumped by a phase-modulated laser. The phase-modulation of the pump links the atom's ground state to a superposition of excited momentum states, a superposition that disconnects from the cavity's field. We present a method for achieving condensation in this state, corroborated by time-of-flight and photon emission measurements. The dark state strategy is shown here to provide a general method for the effective preparation of complex multi-particle states in an open quantum system.
Mass loss, inherent to solid-state redox-driven phase transformations, is responsible for the generation of vacancies that mature into pores. These pores exert influence on the velocity of certain redox and phase transition processes. Through a combined experimental-theoretical lens, we examined the structural and chemical mechanisms inside and at the surface of pores, employing the reduction of iron oxide by hydrogen as a model system. medial congruent Redox product water accumulates inside pores, leading to a shift in the local equilibrium of the reduced material, driving it back towards reoxidation into cubic Fe1-xO, where x signifies iron deficiency within the Fm3[over]m crystal structure. This effect provides insight into the gradual reduction of cubic Fe 1-xO with hydrogen, a crucial element of sustainable steelmaking in the future.
In CeRh2As2, a recent report noted a superconducting phase transition from a low magnetic field to a high magnetic field state, indicating multiple superconducting states exist. Studies have theoretically shown that the presence of two Ce sites within each unit cell, caused by a breakdown of local inversion symmetry at the Ce sites, thus introducing sublattice degrees of freedom, can result in the formation of diverse superconducting phases, even when interacting to favor spin-singlet superconductivity. CeRh2As2's uniqueness stems from its multiple structural phases, a consequence of the freedom of movement within its sublattice. Nonetheless, no detailed microscopic data regarding the SC states has been published thus far. This research employed nuclear magnetic resonance to quantify the spin susceptibility of SC at two crystallographically inequivalent arsenic sites, under diverse magnetic field conditions. The results of our experiments strongly suggest a spin-singlet state is present in both superconducting phases. Along with the superconducting phase, an antiferromagnetic phase is present solely within the low-field superconducting phase; conversely, the high-field superconducting phase shows no signs of magnetic ordering. Selleckchem Aticaprant The present letter underscores the unusual SC properties, sourced from the locally non-central symmetry.
Within an open system paradigm, non-Markovian effects originating from a nearby bath or adjacent qubits are dynamically similar. Still, a critical conceptual separation is required for the management of control over neighboring qubits. Characterizing spatiotemporal quantum correlations involves the integration of recent advances in non-Markovian quantum process tomography and the classical shadows framework. Applied to the system, observables are operations. The free operation is the one that achieves the most extreme depolarization. With this as a starting point for interrupting causality, we systematically remove causal pathways to determine the origin of temporal correlations. This approach facilitates the removal of crosstalk interference, enabling the examination of the non-Markovianity originating from a hidden bath. It additionally provides a means to observe the spreading of correlated noise throughout a lattice, both in space and time, which is influenced by shared environmental factors. Both examples are demonstrated through the application of synthetic data. The scaling factor of classical shadows allows for the elimination of any number of adjacent qubits without extra operational cost. Our method, therefore, is effective and well-suited to systems, even those with all-to-all interactions.
Physical vapor deposition yielded ultrathin polystyrene films (10-50 nm), for which we measured the rejuvenation onset temperature (T onset) and the fictive temperature (T f). Furthermore, we gauge the T<sub>g</sub> of these glasses during the initial cooling phase following rejuvenation, in addition to evaluating the density anomaly in the material as-deposited. As film thickness decreases, both the glass transition temperature (T<sub>g</sub>) in rejuvenated films and the onset temperature (T<sub>onset</sub>) in stable films experience a reduction. Bio finishing Inversely proportional to film thickness, the T f value demonstrates an increasing pattern. Stable glass films exhibit a density increase that diminishes as the film thickness decreases. Across the board, the findings align with a decrease in the apparent glass transition temperature (T<sub>g</sub>) caused by a mobile surface layer, and a concomitant decline in film stability as the thickness is reduced. Presenting a self-consistent collection of stability measurements within ultrathin films of stable glass, the results are a groundbreaking first.
Drawing inspiration from the collective behavior of animal aggregations, we analyze the motion of agent groups within an unconfined two-dimensional plane. The bottom-up principle dictates individual trajectories, causing individuals to reposition themselves to optimize their future path entropy within the environment. Maintaining a range of possibilities, a principle that might contribute to long-term evolutionary success in an uncertain world, is mirrored by this. Naturally, ordered (coaligned) states, and independently, disordered states or rotating clusters, are found. Similar biological arrangements are observed in birds, insects, and fish, respectively. The ordered state demonstrates an order-disorder transition in response to two forms of noise: (i) standard additive orientational noise applied to post-decision orientations and (ii) cognitive noise, which is added to each agent's individualized model of the future paths of other agents. An unusual pattern emerges: the order rises at low noise levels, and subsequently decreases through the order-disorder transition as the noise level escalates.
Extended black hole thermodynamics' higher-dimensional genesis is demonstrated using holographic braneworld models. According to this framework, classical asymptotically anti-de Sitter black holes are mirrored by quantum black holes in one fewer spatial dimension, with a conformal matter sector that dynamically influences the geometry of the brane. The brane tension's alteration leads to a dynamic cosmological constant on the brane, and, consequently, the pressure from the brane black hole becomes variable. Thusly, standard thermodynamics in the bulk, including a work term originating on the brane, precisely results in extended thermodynamics on the brane, to all orders of backreaction. Double holography facilitates a microscopic examination of the extended thermodynamics of particular quantum black holes.
Based on 2010^8 collected electrons from the Alpha Magnetic Spectrometer (AMS) on the International Space Station, we now present highly precise measurements of eleven years' worth of daily cosmic electron fluxes. These measurements cover a rigidity interval from 100 to 419 GV. The electron flux is subject to variations spanning diverse temporal periods. Electron flux, exhibiting recurring patterns with cycles of 27 days, 135 days, and 9 days, is observed. Our findings reveal that the electron fluxes demonstrate unique time-dependent variations in contrast to the proton fluxes. Remarkably, a statistically significant hysteresis effect exists between electron and proton fluxes at rigidities below the threshold of 85 GV.