Closed quantum many-body systems out of equilibrium pose several long-standing problems in physics. Recent years have seen a tremendous progress in approaching these questions, not least due to experiments with
In this presentation, I will explore the challenges and methodologies associated with proving the presence of spectral gaps in quantum many-body systems, with a focus on the 1D AKLT model. Spectral gaps are central in our un...
The articles in the volume are organized into the following sections: Non-equilibrium statistical physics and quantum thermodynamics; Foundations of quantum physics; Quantum optics, light-matter interactions; Quantum many body systems, quantum fluids; General physics. Non-equilibrium statistical physics and...
Physics is a science of measurement. Unfortunately, physical theories usually contain many things that do not represent reality(such as the concept of a particle in Newton's classical mechanics). It is possible to have two completely different theories (which may even be based on different concept...
The dynamics of many-body systems must satisfy cluster separability requirements. In this paper we formulate an abstract framework of four dimensional Euclidean Green functions that can be used to construct relativistic quantum dynamics of N-particle systems consistent with these requirements. This ...
A quantum heat engine (QHE) based on the interaction driving of a many-particle working medium is introduced. The cycle alternates isochoric heating and cooling strokes with both interaction-driven processes that are simultaneously isochoric and isentrop
Quantum Field Theory of Many-body Systems 2025 pdf epub mobi 用户评价 评分☆☆☆ 简洁但难度较大,适合读完Altland的书再度。文小刚很厉害,没有废话。后三章没读过,不评价。个人认为,前面7章好过Nagaosa的书。 评分☆☆☆ 简洁但难度较大,适合读完Altland的书再度。文小刚很厉害,没有废话。后三章没读...
In the probabilistic approach to quantum many-body systems, the ground-state energy is the solution of a nonlinear scalar equation written either as a cumulant expansion or as an expectation with respect to a probability distribution of the potential and hopping (amplitude and phase) values ...
Additionally, we discuss the role of out of time order correlation function (OTOC) to describe quantum chaos in the present non-equilibrium field theoretic setup and its consequences in early universe cosmology (stochastic inflation and reheating). Finally, for completeness, we also provide a bound...
On a 51-ion quantum simulator, we investigate locality of entanglement Hamiltonians for a Heisenberg chain, demonstrating Bisognano–Wichmann predictions of quantum field theory applied to lattice many-body systems, and observe the transition from area- to volume-law scaling of entanglement entropies....