All articles tagged with #many body systems
Originally Published 5 months ago — by Phys.org
Physicists at Emory University used AI and neural networks to discover new physics in dusty plasma, correcting previous assumptions and providing precise models of non-reciprocal forces, with potential applications across various complex systems.
Originally Published 1 year ago — by Phys.org
Researchers have introduced a new method to compute the Rényi entanglement entropy (EE) for many-body systems, particularly focusing on the half-filled honeycomb Hubbard model of interacting fermions. This method, outlined in Physical Review Letters, effectively captures universal features of EE, providing valuable insight into the collective physics of systems comprised of interacting fermions. The computational technique proposed by the research team naturally captures dominant configurations, overcoming previous limitations associated with rare events. The study demonstrates the feasibility of computing the Rényi EE with satisfactory precision, paving the way for future investigations into complex models of interacting many-body systems.
Originally Published 2 years ago — by SciTechDaily
Munshi G. Mustafa introduces thermal field theory, a subset of quantum field theory that focuses on phenomena at non-zero temperatures. This theory combines statistical mechanics with conventional quantum field theory, simplifying the analysis of many-body systems. It is crucial for understanding high-energy heavy-ion collisions, phase transitions in condensed matter physics, and early universe evolution. Mustafa's paper serves as a primer for those interested in learning thermal field theory from the basics.
Originally Published 2 years ago — by SciTechDaily
Physicists at Penn State have discovered a universal reaction in quantum systems when disturbed by a large influx of energy, using ultra-cold, one-dimensional gases, they were able to closely observe this response and the subsequent phase known as “hydrodynamization,” providing a model for understanding similar quantum systems. The findings were published in the journal Nature.
Originally Published 2 years ago — by Phys.org
New experiments using ultra-cold atomic gases reveal a universality in how quantum systems composed of many particles change over time following a large influx of energy that throws the system out of equilibrium. Penn State physicists showed that these gases immediately respond, "evolving" with features that are common to all "many-body" quantum systems thrown out of equilibrium in this way. The experiment and theory together provide a model example of hydrodynamization, which happens so fast that the underlying understanding in terms of quasi-particles can be applied to any many-body quantum system to which a very large amount of energy is added.