Results 131 to 140 of about 12,765,544 (342)

Time-Dependent Real-Space Renormalization Group Method [PDF]

Journal of Sciences, Islamic Republic of Iran, 2005
In this paper, using the tight-binding model, we extend the real-space renormalization group method to time-dependent Hamiltonians. We drive the time-dependent recursion relations for the renormalized tight-binding Hamiltonian by decimating selective ...
doaj  

Gradient flows and the curvature of theory space

Journal of High Energy Physics
The metric and potential associated with the gradient property of renormalisation group flow in multiscalar models in d = 4 − ε dimensions are studied. The metric is identified with the Zamolodchikov metric of nearly marginal operators on the sphere.
William H. Pannell, Andreas Stergiou
doaj   +1 more source

Renormalization group procedure for potential −g/r2

Physics Letters B, 2018
Schrödinger equation with potential −g/r2 exhibits a limit cycle, described in the literature in a broad range of contexts using various regularizations of the singularity at r=0. Instead, we use the renormalization group transformation based on Gaussian
S.M. Dawid, R. Gonsior, J. Kwapisz, K. Serafin, M. Tobolski, S.D. Głazek   +5 more
doaj   +1 more source

Functional renormalization group for fermion lattice models in three dimensions: Application to the Hubbard model on the cubic lattice [PDF]

, 2020
Jannis Ehrlich, Carsten Honerkamp
openalex   +1 more source

Renormalization Group Equations for the SMEFT Operators up to Dimension Seven [PDF]

, 2023
Di Zhang
openalex   +1 more source

Why Compressed Hydrides Are Near‐Room‐Temperature Superconductors

Annalen der Physik, EarlyView.
A constant magnitude surface with vector directions indicated of the non‐rigid electronic potential of one displaced lithium atom in a Li crystal. The upper figure is of the calculated gauge‐dependent field, the bottom gives its rotation (curl operator) of the physical field that describes amplitude shift from the front of the displaced atom to behind ...
Warren E. Pickett
wiley   +1 more source

General quartic β-function at three loops

Journal of High Energy Physics
We determine the three-loop MS ¯ $$ \overline{\textrm{MS}} $$ quartic β-function for the most general renormalisable four-dimensional theories. A general parametrisation of the β-function is compared to known β-functions for specific theories to fix all ...
Tom Steudtner, Anders Eller Thomsen
doaj   +1 more source

Numerical Renormalization Group at Criticality

, 1996
We apply a recently developed numerical renormalization group, the corner-transfer-matrix renormalization group (CTMRG), to 2D classical lattice models at their critical temperatures.
Barber, Baxter, Baxter, Baxter, Burkhardt, de Souza, Fisher, K. Okunishi, Kadanoff, Kikuchi, Klümper, Klümper, Kramers, M. Kikuchi, Nishino, Nishino, Schadschneider, T. Nishino, White, White, Wilson, Östlund   +21 more
core   +1 more source

Effective action for the Yukawa model in curved spacetime

Journal of High Energy Physics, 2018
We consider the one-loop renormalization of a real scalar field interacting with a Dirac spinor field in curved spacetime. A general Yukawa interaction is considered which includes both a scalar and a pseudoscalar coupling. The scalar field is assumed to
David J. Toms
doaj   +1 more source

Properties of Renormalization Group Transformations

, 1997
We describe some properties of Renormalization Group transformations. Especially we show why some of the RG transformations have redundant eigenoperators with eigenvalues that cannot be determined by simple dimensional analysis and give the corresponding
Bell, Bietenholz, Bietenholz, Blatter, DeGrand, DeGrand, Farchioni, Hasenfratz, Hasenfratz, Kadanoff, Niedermayer, Niedermayer, Peter Kunszt, Wiese, Wilson, Wilson, Wilson   +16 more
core   +1 more source