Results 1 to 10 of about 5,090,070 (358)
Dirac cone, flat band and saddle point in kagome magnet YMn6Sn6. [PDF]
Nat Commun, 2021 Kagome-lattices of 3d-transition metals hosting Weyl/Dirac fermions and topological flat bands exhibit non-trivial topological characters and novel quantum phases, such as the anomalous Hall effect and fractional quantum Hall effect.
Li M +11 more
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3D Flow of Hybrid Nanomaterial through a Circular Cylinder: Saddle and Nodal Point Aspects
Mathematics, 2022 This mathematical model explains the behavior of sinusoidal radius activity in stagnation point three-dimensional flow of hybrid nanoparticles through a circular cylinder.
Javali K. Madhukesh +5 more
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Saddle point localization of molecular wavefunctions. [PDF]
Sci Rep, 2016 AbstractThe quantum mechanical description of isomerization is based on bound eigenstates of the molecular potential energy surface. For the near-minimum regions there is a textbook-based relationship between the potential and eigenenergies. Here we show how the saddle point region that connects the two minima is encoded in the eigenstates of the model
Mellau GCh +4 more
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Saddle-point scrambling without thermalization [PDF]
Physical Review A, 2021 Out-of-time-order correlators (OTOCs) have proven to be a useful tool for studying thermalization in quantum systems. In particular, the exponential growth of OTOCS, or scrambling, is sometimes taken as an indicator of chaos in quantum systems, despite ...
R. Kidd, A. Safavi-Naini, J. Corney
semanticscholar +5 more sources
On the Recursive Saddle Point Method [PDF]
SSRN Electronic Journal, 2004 In this paper a simple dynamic optimization problem is solved with the help of the recursive saddle point method developed by Marcet and Marimon (1999). According to Marcet and Marimon, their technique should yield a full characterization of the set of solutions for this problem.
Matthias Messner, Nicola Pavoni
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Hillclimbing saddle point inflation
Physics Letters B, 2018 Recently a new inflationary scenario was proposed in [1] which can be applicable to an inflaton having multiple vacua. In this letter, we consider a more general situation where the inflaton potential has a (UV) saddle point around the Planck scale. This
Kiyoharu Kawana, Katsuta Sakai
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Stochastic Saddle Point Problems with Decision-Dependent Distributions [PDF]
SIAM Journal on Optimization, 2022 This paper focuses on stochastic saddle point problems with decision-dependent distributions. These are problems whose objective is the expected value of a stochastic payoff function and whose data distribution drifts in response to decision variables--a
Killian Wood, E. Dall’Anese
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Saddle point approximation to Higher order [PDF]
Vojnotehnički Glasnik, 2022 Introduction/purpose: Saddle point approximation has been considered in the paper Methods: The saddle point method is used in several different fields of mathematics and physics.
Nicola Fabiano, Nikola Mirkov
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On Accelerated Methods for Saddle-Point Problems with Composite Structure [PDF]
Computer Research and Modeling, 2021 We consider strongly-convex-strongly-concave saddle-point problems with general non-bilinear objective and different condition numbers with respect to the primal and the dual variables. First, we consider such problems with smooth composite terms, one of
Vladislav Tominin +5 more
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Kaczmarz method for saddle point systems [PDF]
E3S Web of Conferences, 2021 The Kaczmarz method is presented for solving saddle point systems. The convergence is analyzed. Numerical examples, compared with classical Krylov subspace methods, SOR-like method (2001) and recent modified SOR-like method (2014), show that the Kaczmarz
Wang Jinmei, Yin Lizi, Wang Ke
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