Results 51 to 60 of about 5,309,525 (360)

Complex saddle points in QCD at finite temperature and density

, 2014
The sign problem in QCD at finite temperature and density leads naturally to the consideration of complex saddle points of the action or effective action.
Nishimura, Hiromichi, Ogilvie, Michael C., Pangeni, Kamal   +2 more
core   +1 more source

Theoretical analysis for critical fluctuations of relaxation trajectory near a saddle-node bifurcation

, 2010
A Langevin equation whose deterministic part undergoes a saddle-node bifurcation is investigated theoretically. It is found that statistical properties of relaxation trajectories in this system exhibit divergent behaviors near a saddle-node bifurcation ...
C. W. Gardiner, G. Parisi, J. Guckenheimer, M. A. Munoz, Mami Iwata, N. Goldenfeld, Shin-ichi Sasa, W. Götze, W. Kob, Y. Kuramoto   +9 more
core   +1 more source

Critical properties of spherically symmetric black hole accretion in Schwarzschild geometry [PDF]

, 2007
The stationary spherically symmetric accretion flow in the Schwarzschild metric has been set up as an autonomous first-order dynamical system, and it has been studied completely analytically.
Abramowicz, Afshordi, Arnab K. Ray, Artemova, Axford, Balazs, Begelman, Blumenthal, Bohr, Bonazzola, Bonazzola, Bondi, Brinkmann, Chakrabarti, Chakrabarti, Chandrasekhar, Chaudhury, Cowie, Das, Das, Das, Das, Das, Frank, Gaite, Garlick, Ipsita Mandal, Jordan, Kazhdan, Kovalenko, Malec, Markovic, Matsumoto, Michel, Moncrief, Muchotrzeb-Czerny, Mészáros, Mészáros, Nowak, Paczyński, Parker, Parker, Petterson, Ray, Ray, Ray, Stellingwerf, Strogatz, Tapas K. Das, Theuns, Titarchuk, Titarchuk, Toropin, Tsuribe, Vitello, Zampieri   +55 more
core   +3 more sources

Distributed Economic Dispatch Control via Saddle Point Dynamics and Consensus Algorithms

IEEE Transactions on Control Systems Technology, 2019
In this brief, a distributed control algorithm is proposed to solve the economic dispatch problem. Without a central control unit, the generators work collaboratively to minimize the generation cost while balancing the supply and demand.
Lu Bai, Maojiao Ye, Chao Sun, G. Hu
semanticscholar   +1 more source

Self‐Trapped Hole Migration and Defect‐Mediated Thermal Quenching of Luminescence in α‐ and β‐Ga2O3

Advanced Functional Materials, EarlyView.
Temperature‐dependent photoluminescence and first‐principles calculations reveal self‐trapped hole migration as the microscopic origin of thermal quenching in α‐ and β‐Ga2O3. The low migration barrier in α‐Ga2O3 enables defect trapping and enhances blue luminescence, while the higher barrier in β‐Ga2O3 preserves ultraviolet emission at elevated ...
Nima Hajizadeh, Ymir K. Frodason, Clemens Petersen, Benjamin M. Janzen, Luca Sung‐Min Choi, Nils Bernhardt, Felix Nippert, Zbigniew Galazka, Joel B. Varley, Holger von Wenckstern, Lasse Vines, Markus R. Wagner   +11 more
wiley   +1 more source

Generic uniqueness of saddle point for two-person zero-sum differential games

Open Mathematics, 2022
The generic uniqueness of saddle point for two-person zero-sum differential games, within the class of open-loop, against the perturbation of the right-hand side function of the control system is investigated.
Ji Wei
doaj   +1 more source

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

Advanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman, Ruben Goeminne, Kuber Singh Rawat, Veronique Van Speybroeck   +3 more
wiley   +1 more source

Practical debiasing with the Covariant Prior in the proportional regime when p < n

Journal of Physics Communications
We show that the Covariant Prior can be used to effectively de-bias the resulting MAP estimator in the proportional regime, where the number of covariates p grows proportionally to n , the number of samples, with p  
Emanuele Massa, Anthony C C Coolen
doaj   +1 more source

Stable Heteroclinic Channel-Based Movement Primitives: Tuning Trajectories Using Saddle Parameters

Applied Sciences
Dynamic systems which underlie controlled systems are expected to increase in complexity as robots, devices, and connected networks become more intelligent.
Natasha Rouse, Kathryn Daltorio
doaj   +1 more source

Sign-changing saddle point

Journal of Functional Analysis, 2005
The author considers semilinear elliptic bundary value problem \[ -\Delta u= f(x,u)\quad\text{in }\Omega,\qquad u= 0\quad\text{on }\partial\Omega \] and the Schrödinger equation \[ -\Delta u+ V_\lambda(x) u= f(x,u),\;x\in\mathbb R^N,\;u(x)\to 0\quad\text{as }|x|\to \infty, \] where \(\Omega\subset\mathbb R^N\) is a bounded domain with smooth boundary \(
openaire   +2 more sources