Results 131 to 140 of about 802,166 (283)

Eliashberg equations derived from the functional renormalization group

, 2005
We describe how the fermionic functional renormalization group (fRG) flow of a Cooper+forward scattering problem can be continued into the superconducting state.
Honerkamp, Carsten, Salmhofer, Manfred
core   +1 more source

Evaluation of spectral zeta-functions with the renormalization group [PDF]

Journal of Physics A: Mathematical and Theoretical, 2017
24 pages, 7 figures, numerous ...
Shanshan Li, Stefan Boettcher
openaire   +3 more sources

Boundary conditions and universal finite‐size scaling for the hierarchical |φ|4$|\varphi |^4$ model in dimensions 4 and higher

Communications on Pure and Applied Mathematics, EarlyView.
Abstract We analyse and clarify the finite‐size scaling of the weakly‐coupled hierarchical n$n$‐component |φ|4$|\varphi |^4$ model for all integers n≥1$n \ge 1$ in all dimensions d≥4$d\ge 4$, for both free and periodic boundary conditions. For d>4$d>4$, we prove that for a volume of size Rd$R^{d}$ with periodic boundary conditions the infinite‐volume ...
Emmanuel Michta, Jiwoon Park, Gordon Slade   +2 more
wiley   +1 more source

Geometric Operators in the Einstein–Hilbert Truncation

Universe, 2019
We review the study of the scaling properties of geometric operators, such as the geodesic length and the volume of hypersurfaces, in the context of the Asymptotic Safety scenario for quantum gravity. We discuss the use of such operators and how they can
Maximilian Becker, Carlo Pagani
doaj   +1 more source

Functional renormalization group for the anisotropic triangular antiferromagnet

, 2010
We present a functional renormalization group scheme that allows us to calculate frustrated magnetic systems of arbitrary lattice geometry beyond O(200) sites from first principles. We study the magnetic susceptibility of the antiferromagnetic (AFM) spin-
Reuther, Johannes, Thomale, Ronny
core   +1 more source

Quasi‐invariance of Gaussian measures for the 3d$3d$ energy critical nonlinear Schrödinger equation

Communications on Pure and Applied Mathematics, EarlyView.
Abstract We consider the 3d$3d$ energy critical nonlinear Schrödinger equation with data distributed according to the Gaussian measure with covariance operator (1−Δ)−s$(1-\Delta)^{-s}$, where Δ$\Delta$ is the Laplace operator and s$s$ is sufficiently large. We prove that the flow sends full measure sets to full measure sets. We also discuss some simple
Chenmin Sun, Nikolay Tzvetkov
wiley   +1 more source

Introduction to the functional RG and applications to gauge theories [PDF]

, 2006
These lectures contain an introduction to modern renormalization group (RG) methods as well as functional RG approaches to gauge theories. In the first lecture, the functional renormalization group is introduced with a focus on the flow equation for the ...
A Bonanno, A Cucchieri, A Sternbeck, AS Kapoyannis, B.J. Warr, BJ Schaefer, BJ Schaefer, C Alexandrou, C Bagnuls, C Lerche, C Wetterich, C Wetterich, CD Roberts, CM Bender, CS Fischer, CS Fischer, CS Fischer, D Zappala, D Zappala, D Zwanziger, D Zwanziger, D. Litim, D. Zwanziger, D.F. Litim, DF Litim, DF Litim, DF Litim, DU Jungnickel, F Freire, F Schutz, FJ Wegner, G Keller, G Papp, H Gies, H Gies, H Gies, H Gies, H Gies, H. Gies, IM Singer, J Berges, J Gattnar, J Polchinski, J Polonyi, J Polonyi, JC Taylor, JF Nicoll, JM Pawlowski, JM Pawlowski, JM Pawlowski, K Aoki, K Langfeld, KG Wilson, KI Aoki, L Smekal von, L. Canet, LF Abbott, M Bonini, M D’Attanasio, M Reuter, M Reuter, M Reuter, M Salmhofer, M. Bonini, ME Fisher, P Maris, R Alkofer, R Floreanini, R.D. Ball, S Furui, T Kugo, TR Hurd, TR Morris, U Ellwanger, U Ellwanger, U Ellwanger, UKQCD Collaboration], V Branchina, VN Gribov, W Dittrich, Y Igarashi   +80 more
core   +3 more sources

The functional renormalization group and O(4) scaling [PDF]

The European Physical Journal C, 2010
The critical behavior of the chiral quark-meson model is studied within the Functional Renormalization Group (FRG). We derive the flow equation for the scale dependent thermodynamic potential at finite temperature and density in the presence of a symmetry-breaking external field. Within this scheme, the critical scaling behavior of the order parameter,
B. Stokić, Krzysztof Redlich, Bengt Friman   +2 more
openaire   +4 more sources

Vibrational Partition Functions from Bond Order and Populations Relationships

ChemPhysChem, EarlyView.
A new computational model is presented that predicts vibrational partition functions using bond orders and populations relationships (QBOP). This model demonstrates that thermochemical energy contributions can be reasonably approximated based on well‐conditioned orbital populations without the need for a costly Hessian calculation.
Barbaro Zulueta, John A. Keith
wiley   +1 more source

A functional perspective on emergent supersymmetry

Journal of High Energy Physics, 2017
We investigate the emergence of N $$ \mathcal{N} $$ = 1 supersymmetry in the long-range behavior of three-dimensional parity-symmetric Yukawa systems. We discuss a renormalization approach that manifestly preserves supersymmetry whenever such symmetry is
Holger Gies, Tobias Hellwig, Andreas Wipf, Omar Zanusso   +3 more
doaj   +1 more source