Results 41 to 50 of about 1,572,659 (339)

Tunneling between fermionic vacua and the overlap formalism [PDF]

, 1996
The probability amplitude for tunneling between the Dirac vacua corresponding to different signs of a parity breaking fermionic mass $M$ in $2+1$ dimensions is studied, making contact with the continuum overlap formulation for chiral determinants.
Alvarez-Gaume, C.D. Fosco, Fosco, Fosco, Fradkin, Jansen, Kaplan, Karsten, Karsten, Narayanan, Narayanan, Neuberger, Nielsen, Nielsen, Nielsen, Rajaraman, Randjbar-Daemi, Shamir, Zinn-Justin   +18 more
core   +2 more sources

Machine Learning-Based Production Prediction Model and Its Application in Duvernay Formation

Energies, 2021
The production of a single gas well is influenced by many geological and completion factors. The aim of this paper is to build a production prediction model based on machine learning technique and identify the most important factor for production ...
Zekun Guo, Hongjun Wang, Xiangwen Kong, Li Shen, Yuepeng Jia   +4 more
doaj   +1 more source

A conjecture on the infrared structure of the vacuum Schrodinger wave functional of QCD [PDF]

, 2007
The Schrodinger wave functional for the d=3+1 SU(N) vacuum is a partition function constructed in d=4; the exponent 2S in the square of the wave functional plays the role of a d=3 Euclidean action.
D. Diakonov, E. G. S. Luna, John M. Cornwall, R. Jackiw   +3 more
core   +2 more sources

A comparison on the performance and risk diversification benefits of real estate investment trusts in Malaysia and Singapore

SHS Web of Conferences, 2018
This study analyses the investment performance and effectiveness of risk diversification between M-REITs’ and S-REITs’ by comparing their respective Sharpe Ratio, Treynor Ratio and Jensen’s Alpha including the diversification measures (unsystematic risk ...
David Ng Ching Yat, Li Leong May, Chai Lau Teck, Rahim Fitriya Abdul   +3 more
doaj   +1 more source

Advanced Soft Computing Ensemble for Modeling Contaminant Transport in River Systems: A Comparative Analysis and Ecological Impact Assessment [PDF]

Journal of Hydraulic Structures
The paper applies soft computing techniques to contaminant transport modeling in river systems and focuses on the Monocacy River. The research employed various techniques, including Artificial Neural Networks (ANN), Adaptive Neuro-Fuzzy Inference Systems
Jafar Chabokpour
doaj   +1 more source

On square roots of M-operators

Linear Algebra and its Applications, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Decoherence and the Loschmidt echo [PDF]

, 2003
Environment--induced decoherence causes entropy increase. It can be quantified using, e.g., the purity $\varsigma={\rm Tr}\rho^2$. When the Hamiltonian of a quantum system is perturbed, its sensitivity to such perturbation can be measured by the ...
D. A. R. Dalvit, D. Giulini, F. M. Cucchietti, J. P. Paz, J. P. Paz, R. P. Feynman, W. H. Zurek, W. H. Zurek   +7 more
core   +2 more sources

Prevalence and determinants of permanent atrial fibrillation in post-menopausal hypertensive women

Italian Journal of Medicine, 2023
Objective. We studied the prevalence and major predisposing factors of permanent atrial fibrillation (PAF) in a population of hypertensive post-menopausal (HPMW) women. Materials and Methods.
Maria Maiello, Annagrazia Cecere, Marco Matteo Ciccone, Pasquale Palmiero   +3 more
doaj   +1 more source

Quantum-to-classical crossover of mesoscopic conductance fluctuations [PDF]

, 2004
We calculate the system-size-over-wave-length ($M$) dependence of sample-to-sample conductance fluctuations, using the open kicked rotator to model chaotic scattering in a ballistic quantum dot coupled by two $N$-mode point contacts to electron ...
A. Kormanyos, A. Lodder, A. Ossipov, A. Tajic, B.L. Altshuler, C. W. J. Beenakker, E.B. Bogomolny, F. Borgonovi, F. Borgonovi, H.U. Baranger, I. Adagideli, I.L. Aleiner, J. Tworzydło, J. Tworzydło, M.C. Goorden, M.G. Vavilov, O. Agam, P.A. Lee, P.G. Silvestrov, P.G. Silvestrov, Ph. Jacquod, Ph. Jacquod, R.A. Jalabert, R.E. Prange, Y.V. Fyodorov   +24 more
core   +3 more sources

Sub-wavelength lithography over extended areas [PDF]

, 2001
We demonstrate a systematic approach to sub-wavelength resolution lithographic image formation on films covering areas larger than a wavelength squared. For example, it is possible to make a lithographic pattern with a feature size resolution of $\lambda/
A. Flock, A. Rose, A. Rose, A. Trifonov, A.E. Burgess, A.N. Boto, C. Fabre, C. Putman, D.T. Pegg, E.J.S. Fonseca, G. Björk, G.S. Agarwal, Gunnar Björk, J. Jacobson, J. Jelles, J. Söderholm, J.G. Rarity, J.J. Bollinger, Jonas Söderholm, Luis L. Sánchez-Soto, M.H.Y. Moussa, M.I. Kolobov, M.I. Kolobov, M.I. Kolobov, M.I. Kolobov, M.I. Kolobov, N. Margolus, P. Kok, P.R. Dragsten, S. Kamimura, S.F. Huelga, V. Buz̆ek, W. Denk, X. Min   +33 more
core   +2 more sources