Results 61 to 70 of about 161,407 (287)

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

Renormalization group approach to matrix models via noncommutative space

, 2012
We develop a new renormalization group approach to the large-N limit of matrix models. It has been proposed that a procedure, in which a matrix model of size (N-1) \times (N-1) is obtained by integrating out one row and column of an N \times N matrix ...
B Wit de, C Das, C-S Chu, DA Varshalovich, Dan Tomino, DJ Gross, E Brézin, E Brézin, F David, H Kawai, H Steinacker, J Distler, J Hoppe, J Madore, JM Maldacena, K Wilson, M Panero, M Raamsdonk Van, MR Douglas, MR Douglas, MR Douglas, N Ishibashi, R Dijkgraaf, RJ Szabo, S Higuchi, S Higuchi, S Higuchi, S Higuchi, S Iso, S Minwalla, S Vaidya, Shoichi Kawamoto, T Aoyama, T Azuma, T Banks, T Eguchi, T Ishii, T Kuroki, Tsunehide Kuroki, V Knizhnik, X Martin   +40 more
core   +1 more source

Quantum Renormalization Group and Holography [PDF]

, 2013
Quantum renormalization group scheme provides a microscopic understanding of holography through a general mapping between the beta functions of underlying quantum field theories and the holographic actions in the bulk.
Lee, Sung-Sik
core   +2 more sources

Functional and local renormalization groups [PDF]

Physical Review D, 2015
We discuss the relation between functional renormalization group (FRG) and local renormalization group (LRG), focussing on the two dimensional case as an example. We show that away from criticality the Wess-Zumino action is described by a derivative expansion with coefficients naturally related to RG quantities.
Codello A, D'Odorico G, Pagani C
openaire   +5 more sources

Metallic Bond Induces Soft Phonon Mode and Anharmonicity in Heusler Alloy

Advanced Science, EarlyView.
The fruitful functional performances of metastable Heusler alloys originate from the martensitic transformation driven by the transverse acoustic soft phonon mode, regulated by anharmonicity. This study reveals that the long‐range interaction rooted in metallic bonding between spin‐down d‐orbitals of Ni─Ni induces phonon softening and significant ...
Hao‐Xuan Liu, Hai‐Le Yan, Nan Jia, Bo Yang, Zongbin Li, Xiang Zhao, Liang Zuo   +6 more
wiley   +1 more source

Maximal abelian and Curci-Ferrari gauges in momentum subtraction at three loops

, 2015
The vertex structure of QCD fixed in the maximal abelian gauge (MAG) and Curci-Ferrari gauge is analysed at two loops at the fully symmetric point for the 3-point functions corresponding to the three momentum subtraction (MOM) renormalization schemes ...
Bell, J. M., Gracey, J. A.
core   +1 more source

Optimization of Renormalization Group Flow [PDF]

, 1999
Renormalization group flow equations for scalar lambda Phi^4 are generated using three classes of smooth smearing functions. Numerical results for the critical exponent nu in three dimensions are calculated by means of a truncated series expansion of the
Alexandre, Aoki, Aoki, Ball, Bergerhoff, Bonini, Comellas, Commellas, D'Attanasio, Dalvit, Hasenfratz, Janos Polonyi, Liao, Liao, Liao, Liao, Liao, Liao, Liao, Liao, Margaritis, Michael Strickland, Morris, Morris, Morris, Morris, Nicoll, Nicoll, Nicoll, Ogure, Polchinski, Rudnick, Sen-Ben Liao, Shafer, Tetradis, Tetradis, Wegner, Wilson, Wilson   +38 more
core   +2 more sources

Chemically‐Disordered Transparent Conductive Perovskites With High Crystalline Fidelity

Advanced Science, EarlyView.
Kinetically arrested, chemically disordered perovskite thin films exhibit exquisite crystalline fidelity, broad IR–UV transparency, and low resistivity, despite incorporating five mismatched 3d–5d cations, including Cr and W. This study unites electronic correlation, cation diversity, valence complexity, and disorder—enabling new transparent conductors
Saeed S. I. Almishal, Pat Kezer, Jacob T. Sivak, Yasuyuki Iwabuchi, Sai Venkata Gayathri Ayyagari, Saugata Sarker, Matthew Furst, Gerald Bejger, Billy Yang, Simon Gelin, Nasim Alem, Ismaila Dabo, Christina M. Rost, Susan B. Sinnott, Vincent Crespi, Venkatraman Gopalan, Roman Engel‐Herbert, John T. Heron, Jon‐Paul Maria   +18 more
wiley   +1 more source

Exact Schwinger Proper Time Renormalisation

Journal of High Energy Physics
We derive an exact version of the Schwinger Proper Time Renormalisation Group flow equation from first principles from the complete path integral, without using any perturbative expansion.
Steven Abel, Lucien Heurtier
doaj   +1 more source

From Renormalization Group Flows to Cosmology

Frontiers in Physics, 2020
According to the asymptotic-safety conjecture, the gravitational renormalization group flow features an ultraviolet-attractive fixed point that makes the theory renormalizable and ultraviolet complete.
Alessia Platania
doaj   +1 more source