Results 21 to 30 of about 2,341 (106)

Boson metastable ground states with spontaneous symmetry breaking [PDF]

, 1997
We show that a system of bosons in a T=0 quantum field theory can present metastable ground states with spontaneous symmetry breaking, even in the absence of an imaginary mass term. This gives a natural explanation to the Davis-Shellard background field \
Bernard, Bogoliubov, Coleman, Davis, Davis, Dolan, Feynman, Feynman, Forster, Glassgold, Goldstone, Gradwohl, Gradwohl, Haber, Kalb, Kapusta, Kapusta, Kirzhnit, Lee, Lund, M. Chaves, Nambu, Nielsen, Peskin, Vilenkin, Weinberg, Yastremiz   +26 more
core   +2 more sources

An Expansion Term In Hamilton's Equations [PDF]

, 1999
For any given spacetime the choice of time coordinate is undetermined. A particular choice is the absolute time associated with a preferred vector field. Using the absolute time Hamilton's equations are $- (\delta H_{c})/(\delta q)=\dot{\pi}+\Theta\pi,
Adkins C. J., Arnold V. I., Arnowitt R., Hargreaves R., Hawking S. W., M. D Roberts, Roberts M. D., Roberts M. D., Rund H., Wald R. M.   +9 more
core   +2 more sources

Identification of Autologous Tissue Sources and Optimization of a Treatment Method for Intraoperative Manufacturing of Heart Valve Constructs

Artificial Organs, EarlyView.
The use of autologous connective tissue, such as pericardium or peritoneum, combined with controlled tissue treatment, has the potential to result in a more durable heart valve prosthesis than current commercial prostheses. ABSTRACT Introduction Valvular heart disease remains a leading cause of morbidity and mortality. Current biological and mechanical
Marvin Steitz, Mahamuda Badhon Khan, Katharina Fritsch, Alexander Breitenstein‐Attach, Jana Katharina Betty Korbacher, Jordi Joaquin Modolell Y Mainou, Katrin Schrimpf, Robert Ramm, Sara Knigge, Katja Eildermann, Georg Arlt, Antonia Schulz, Jonathan Frederik Sebastian Kiekenap, Boris Warnack, Peter Kramer, Frank Edelmann, Felix Berger, Boris Schmitt   +17 more
wiley   +1 more source

Quantum BRST operators in the extended BRST-anti-BRST formalism

, 2000
The quantum BRST-anti-BRST operators are explicitely derived and the consequences related to correlation functions are investigated. The connection with the standard formalism and the loopwise expansions for quantum operators and anomalies in Sp(2 ...
Batalin, Batalin, Batalin, Batalin, Batalin, Damgaard, de Wit, Henneaux, Henneaux, Paris, Paris, Troost, V. Calian, Witten   +13 more
core   +1 more source

Regge-plus-resonance predictions for neutral-kaon photoproduction from the deuteron [PDF]

, 2010
We present a Regge-inspired effective-Lagrangian framework for neutral-kaon photoproduction from the deuteron. Quasi-free kaon production is investigated using the Regge-plus-resonance elementary operator within the relativistic plane-wave impulse ...
De Cruz, Lesley, Ryckebusch, Jan, Vancraeyveld, Pieter   +2 more
core   +3 more sources

Capitalism and Femicide: an Empirical Inquiry

Kyklos, EarlyView.
ABSTRACT This study investigates the claim that capitalism (or neoliberal reforms) is associated with higher rates of femicide, which is often identified as an outcome of the capitalist exploitation of women in parts of the feminist literature. Employing a panel of 163 countries observed between 1990 and 2023, we find no significantly positive ...
Christian Bjørnskov, Martin Rode
wiley   +1 more source

Connection Between Wave Functions in the Dirac and Foldy-Wouthuysen Representations

, 2006
The connection between wave functions in the Dirac and Foldy-Wouthuysen representations is found. When the Foldy-Wouthuysen transformation is exact, upper spinors in two representations differ only by constant factors, and lower spinors in the Foldy ...
A. J. Silenko, A. J. Silenko, A. J. Silenko, A. J. Silenko, D. M. Fradkin, J. P. Costella, L. D. Landau, L. L. Foldy, T. Goldman, V. G. Bagrov, W. Tsai   +10 more
core   +1 more source

Designing 3d Transition‐Metal Doped g‐C3N4 Monolayer for Enhanced Bifunctional Oxygen Evolution/Reduction Reactions Activity: Defect Physics and Constant‐Potential Study

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Graphitic carbon nitride (g‐C3N4) doped with 3d transition metals (3d‐TM@g‐C3N4) has gained attention as a noble metal‐free alternative for oxygen evolution and reduction reactions (OER/ORR). Yet the key mechanisms driving its performance remain debated, especially across different charge states.
Jing Zhang, Yanyan Qu, Dongying Li, Aodi Zhang, Xuefei Liu, Wentao Wang, Pengfei Ou   +6 more
wiley   +1 more source

Penile rehabilitation in men after radical robotic prostatectomy: Fact or fiction?

UroPrecision, Volume 4, Issue 1, Page 22-34, March 2026.
Abstract Erectile dysfunction (ED) is one of the most frequent and distressing complications after radical prostatectomy (RP), significantly impairing patients’ quality of life and intimate relationships. Penile rehabilitation (PR) aims to preserve erectile tissue integrity, prevent fibrosis, and facilitate early functional recovery by restoring ...
Karen Zhang, Arnold P. P. Achermann, Hunter Hasley, Richard Bennett, Andrew Guo, Mohammed Mahdi, Lucas G. C. R. de Amorim, Helen L. Bernie, Thairo A. Pereira   +8 more
wiley   +1 more source

Remarks on the Collective Quantization of the SU(2) Skyrme Model

, 1994
We point out the question of ordering momentum operator in the canonical \break quantization of the SU(2) Skyrme Model. Thus, we suggest a new definition for the momentum operator that may solve the infrared problem that appears when we try to minimize ...
Adkins G, Fujii K, Fujii K, J A Neto, Lee T D, Normand J M, Skyrme T H R, Toda A   +7 more
core   +1 more source