Results 81 to 90 of about 34,391 (232)

Generalized Chemical Model for Warm Dense Hydrogen: Ionization Potential Depression and Molecular Dissociation Shifts

Contributions to Plasma Physics, EarlyView.
ABSTRACT Warm dense matter (WDM) is a complex state, where quantum effects, thermal excitations, and strong interparticle correlations coexist. Understanding its microscopic composition and medium‐induced modifications of atomic and molecular properties is essential for planetary modeling, fusion research, and high‐energy‐density experiments.
L. T. Yerimbetova, Yu. V. Arkhipov, Ye. S. Mukhametkarimov, A. E. Davletov, I. M. Tkachenko   +4 more
wiley   +1 more source

R K * $$ {R}_{K^{\left(*\right)}} $$ with leptoquarks and the origin of Yukawa couplings

Journal of High Energy Physics, 2018
We construct a model where the Yukawa couplings of the Standard Model (SM) fermions arise from the breaking of a Z 2 symmetry and through mixing with a fourth family of vector-like fermions.
Ivo de Medeiros Varzielas, Stephen F. King   +1 more
doaj   +1 more source

Notions of Fermionic Entropies for Causal Fermion Systems

Mathematical Physics, Analysis and Geometry
Abstract The fermionic von Neumann entropy, the fermionic entanglement entropy and the fermionic relative entropy are defined for causal fermion systems. Our definition makes use of entropy formulas for quasi-free fermionic states in terms of the reduced one-particle density operator.
Finster F., Jonsson R. H., Lottner M., Much A., Murro S.   +4 more
openaire   +4 more sources

The Virial Expansion of the Hydrogen Equation of State in Comparison to PIMC Simulations: The Quasiparticle Concept, IPD, and Ionization Degree

Contributions to Plasma Physics, EarlyView.
ABSTRACT The properties of plasmas in the low‐density limit are described by virial expansions. Analytical expressions are known for the lowest virial coefficients from Green's function approaches. Recently, accurate path‐integral Monte Carlo (PIMC) simulations were performed for the hydrogen plasma at low densities by Filinov and Bonitz (Phys. Rev.
Gerd Röpke, Chengliang Lin, W. Ebeling, H. Reinholz   +3 more
wiley   +1 more source

How Classical Particles Emerge from the Quantum World. [PDF]

, 2010
The symmetrization postulates of quantum mechanics (symmetry for bosons, antisymmetry for fermions) are usually taken to entail that quantum particles of the same kind (e.g., electrons) are all in exactly the same state and therefore indistinguishable in
Dennis Dieks, Lubberdink, A., Dieks, D.G.B.J., History and Foundations of Science, Andrea Lubberdink, Dieks, Dennis, Lubberdink, Andrea, Sub Foundations&PhilosophyofNaturSc begr   +7 more
core   +1 more source

Reweighting Scheme for the Calculation of Grand‐Canonical Expectation Values in Quantum Monte Carlo Simulations With a Fermion Sign Problem

Contributions to Plasma Physics, EarlyView.
ABSTRACT Ab initio path integral Monte Carlo (PIMC) simulations constitute the gold standard for the estimation of a broad range of equilibrium properties of a host of interacting quantum many‐body systems spanning a broad range of conditions from ultracold atoms to warm dense quantum plasmas.
Paul Hamann, Jan Vorberger, Tobias Dornheim   +2 more
wiley   +1 more source

Chiral fermions on the lattice [PDF]

, 2002
We discuss topological obstructions to putting chiral fermions on an even dimensional lattice. The setting includes Ginsparg-Wilson fermions, but is more general.
Pawlowski, J. M., Jan M. Pawlowski, Oliver Jahn, Jahn, O.   +3 more
core   +1 more source

Interference of Particles with Fermionic Internal Degrees of Freedom

Entropy
The interference of fermionic particles, specifically molecules comprising a small number of fermions, in a Mach–Zehnder interferometer is being investigated under the influence of both classical and non-classical external controls.
Jerzy Dajka
doaj   +1 more source

Generalized Beth–Uhlenbeck Entropy Formula From the Φ‐Derivable Approach

Contributions to Plasma Physics, EarlyView.
ABSTRACT We derive a generalized Beth–Uhlenbeck formula for the entropy of a dense fermion system with strong two‐particle correlations, including scattering states and bound states. We work within the Φ‐derivable approach to the thermodynamic potential.
David Blaschke, Gerd Röpke, Gordon Baym
wiley   +1 more source

Dirac Fermions in Borophene [PDF]

Physical Review Letters, 2017
accepted for publication in Physical Review ...
Feng, Baojie, Sugino, Osamu, Liu, Ro-Ya, Zhang, Jin, Yukawa, Ryu, Kawamura, Mitsuaki, Iimori, Takushi, Kim, Howon, Hasegawa, Yukio, Li, Hui, Chen, Lan, Wu, Kehui, Kumigashira, Hiroshi, Komori, Fumio, Chiang, Tai-Chang, Meng, Sheng, Matsuda, Iwao   +16 more
openaire   +3 more sources