Results 51 to 60 of about 743,578 (322)
Optimization of the Sherrington-Kirkpatrick Hamiltonian [PDF]
IEEE Annual Symposium on Foundations of Computer Science, 2018 Let A be a symmetric random matrix with independent and identically distributed Gaussian entries above the diagonal. We consider the problem of maximizing the quadratic form associated to A over binary vectors.
A. Montanari
semanticscholar +1 more source
Entropy-energy inequalities for qudit states [PDF]
, 2004 We establish a procedure to find the extremal density matrices for any finite Hamiltonian of a qudit system. These extremal density matrices provide an approximate description of the energy spectra of the Hamiltonian.
Figueroa, Armando +5 more
core +6 more sources
Ultraviolet Renormalization of the Nelson Hamiltonian through Functional Integration [PDF]
, 2013 Starting from the N-particle Nelson Hamiltonian defined by imposing an ultraviolet cutoff, we perform ultraviolet renormalization by showing that in the zero cutoff limit a self-adjoint operator exists after a logarithmically divergent term is subtracted
Gubinelli, M. +2 more
core +3 more sources
Contact Hamiltonian systems [PDF]
Journal of Mathematics and Physics, 2018 In this paper, we study Hamiltonian systems on contact manifolds, which is an appropriate scenario to discuss dissipative systems. We show how the dissipative dynamics can be interpreted as a Legendrian submanifold, and also prove a coisotropic reduction
Manuel Lainz Valc'azar, M. D. Le'on
semanticscholar +1 more source
Theory of invariants-based formulation of ${\bf k}\cdot{\bf p}$ Hamiltonians with application to strained zinc-blende crystals [PDF]
, 2017 Group theoretical methods and ${\bf k}\cdot{\bf p}$ theory are combined to determine spin-dependent contributions to the effective conduction band Hamiltonian.
Eckern, Ulrich +2 more
core +2 more sources
Randomized Hamiltonian Mechanics
Doklady Mathematics, 2019 Randomized Hamiltonian mechanics is the Hamiltonian mechanics which is determined by a time-dependent random Hamiltonian function. Corresponding Hamiltonian system is called random Hamiltonian system. The Feynman formulas for the random Hamiltonian systems are obtained. This Feynman formulas describe the solutions of Hamilton equation whose Hamiltonian
Orlov, Yu. N. +2 more
openaire +3 more sources
Galoisian obstructions to non-Hamiltonian integrability [PDF]
, 2009 We show that the main theorem of Morales--Ramis--Simo about Galoisian obstructions to meromorphic integrability of Hamiltonian systems can be naturally extended to the non-Hamiltonian case.
Bates +10 more
core +5 more sources
Forbidden Pairs and (k,m)-Pancyclicity
Discussiones Mathematicae Graph Theory, 2017 A graph G on n vertices is said to be (k, m)-pancyclic if every set of k vertices in G is contained in a cycle of length r for each r ∈ {m, m+1, . . . , n}.
Crane Charles Brian
doaj +1 more source
Hamiltonian effective potential
Physical Review D, 1993 A Hamiltonian effective potential (the logarithm of the square of the wave functional) is defined and calculated at the tree and one loop levels in a $ ^4$ scalar field theory. The loop expansion for eigenfunctionals is equivalent to the combination of WKB expansion and an expansion around constant field configurations.
Basista, Beth, Suranyi, Peter
openaire +3 more sources
The 2-local Hamiltonian problem encompasses NP [PDF]
, 2003 We show that the NP complete problems MAX CUT and INDEPENDENT SET can be formulated as the 2-local Hamiltonian problem as defined by Kitaev. He introduced the quantum complexity class BQNP as the quantum analog of NP, and showed that the 5-local ...
Beth, Thomas, Wocjan, Pawel
core +2 more sources