Results 71 to 80 of about 162,505 (294)

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

Boosting the Transparency of Metallic SrNbO3 Through Ti Doping

Advanced Materials Interfaces, EarlyView.
Transparent conductors are optoelectronic devices of high demand. The present study presents a path on how to boost the figure of merit of the recently proposed perovskite oxides: Ti doping reduces electronic correlations and thus the absorption above the plasma frequency, while keeping the plasma frequency below the visible range.
Shammi Kumar, Liang Si, Karsten Held, Sankar Dhar, Rakesh Kumar, Priya Johari   +5 more
wiley   +1 more source

Dynamically driven renormalization group [PDF]

Journal of Statistical Physics, 1997
We present a detailed discussion of a novel dynamical renormalization group scheme: the Dynamically Driven Renormalization Group (DDRG). This is a general renormalization method developed for dynamical systems with non-equilibrium critical steady-state.
A. Vespignani, S. Zapperi, LORETO, Vittorio   +2 more
openaire   +6 more sources

The Correlated Block Renormalization Group

, 1995
We formulate the standard real-space renormalization group method in a way which takes into account the correlation between blocks. This is achieved in a dynamical way by means of operators which reflect the influence on a given block of its neighbours ...
Drell, Fenández-Pacheco, Germán Sierra, González, Javier Rodriguez-Laguna, Jullien, Martín-Delgado, Martín-Delgado, Martín-Delgado, Miguel A. Martín-Delgado, Nishino, Nishino, Noack, Ostlund, Pfeuty, Rabin, White, White, White, White, Wilson   +20 more
core   +2 more sources

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

Illuminating Quantum Phenomena in 2D Materials: The Power of Optical Spectroscopy

Advanced Optical Materials, EarlyView.
Atomically thin 2D materials host quantum tunnelling, plasmonic and excitonic phenomena driven by reduced dimensionality and strong many‐body interactions. This review links these effects to state‐of‐the‐art optical probes—NSOM, pump–probe, CARS, TRR, and optical frequency comb spectroscopy—highlighting how their ultrahigh spatial–temporal resolution ...
Yuhui Zhou, Jiaru Zhang, Guanghui Ren, Bao Yue Zhang, Jian Zhen Ou   +4 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

Renormalization group coefficients and the S-matrix [PDF]

Journal of High Energy Physics, 2016
We show how to use on-shell unitarity methods to calculate renormalization group coefficients such as beta functions and anomalous dimensions. The central objects are the form factors of composite operators. Their discontinuities can be calculated via phase-space integrals and are related to corresponding anomalous dimensions.
Caron Huot, Simon, Wilhelm, Matthias
openaire   +5 more sources

Wilson Loop Renormalization Group Flows

, 2011
The locally BPS Wilson loop and the pure gauge Wilson loop map under AdS/CFT duality to string world-sheet boundaries with standard and alternate quantizations of the world-sheet fields.
AA Migdal, AA Migdal, AJ Amsel, AM Polyakov, AM Polyakov, AM Polyakov, AM Polyakov, DJ Gross, G Parisi, IR Klebanov, J Gomis, J McGreevy, James Sully, JM Maldacena, Joseph Polchinski, LF Alday, N Drukker, N Drukker, N Drukker, N Sakai, O Andreev, O Andreev, S Hollands, S-J Rey, V Dotsenko, WA Bardeen, Y Makeenko, Y Makeenko   +27 more
core   +1 more source

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