Results 181 to 190 of about 439,454 (357)

A functional equation for quadratic forms

Aequationes Mathematicae, 1979
openaire   +2 more sources

Green's Function Perspective on the Nonlinear Density Response of Quantum Many-Body Systems. [PDF]

J Stat Phys
Vorberger J, Dornheim T, Böhme MP, Moldabekov ZA, Tolias P.   +4 more
europepmc   +1 more source

Solutions and the Generalized Hyers-Ulam-Rassias Stability of a Generalized Quadratic-Additive Functional Equation [PDF]

, 2011
Mohammad Janfada, Rahele Shourvazi
openalex   +1 more source

Axion‐Like Interactions and CFT in Topological Matter, Anomaly Sum Rules and the Faraday Effect

Advanced Physics Research, EarlyView.
This review investigates the connection between chiral anomalies and their manifestation in topological materials, using both perturbative methods based on ordinary quantum field theory and conformal field theory (CFT). It emphasizes the role of CFT in momentum space for parity‐odd correlation functions, and their reconstruction by the inclusion of a ...
Claudio Corianò, Mario Cretì, Stefano Lionetti, Dario Melle, Riccardo Tommasi   +4 more
wiley   +1 more source

Stability of a Generalized Trigonometric-Quadratic Functional Equation

Journal of Function Spaces and Applications, 2013
Janyarak Tongsomporn, Vichian Laohakosol
doaj   +1 more source

Path Integral Spin Dynamics for Quantum Paramagnets

Advanced Physics Research, EarlyView.
The study has developed a path integral method, which is a classical approach, combined with atomistic spin dynamics simulations to calculate thermal quantum expectation values. This method can handle Hamiltonians with non‐linear terms, which are important for describing uniaxial anisotropies and mechanical constraints.
Thomas Nussle, Pascal Thibaudeau, Stam Nicolis   +2 more
wiley   +1 more source

Towards efficient solutions: A novel approach to quadratic nonlinearity in boundary value problems. [PDF]

PLoS One
Kouser S, Ur Rehman S, Elmasry Y, Azeem Khan W, Ahmad F, Khan H.   +5 more
europepmc   +1 more source

Orientation‐Dependent Upper Critical Magnetic Field and Density of State for Uranium Ditelluride

Advanced Physics Research, EarlyView.
This study investigates the orientation‐dependent upper critical magnetic field (HC2) and the density of states (DOS) in the unconventional superconductor UTe2. These results reveal an anisotropic HC2, with distinct critical fields along different crystallographic axes, highlighting the role of electronic correlations and spin‐triplet pairing.
Habtamu Anagaw Muluneh
wiley   +1 more source

Aggregation-diffusion in heterogeneous environments. [PDF]

J Math Biol
Potts JR.
europepmc   +1 more source

Solution and stability of generalized mixed type cubic, quadratic and additive functional equation in quasi-Banach spaces

, 2008
M‎. ‎Eshaghi Gordji, H. Khodaei
openalex   +2 more sources