Results 31 to 40 of about 70,225 (278)

Evolutionary quantum architecture search for parametrized quantum circuits

open access: yesProceedings of the Genetic and Evolutionary Computation Conference Companion, 2022
Recent advancements in quantum computing have shown promising computational advantages in many problem areas. As one of those areas with increasing attention, hybrid quantum-classical machine learning systems have demonstrated the capability to solve various data-driven learning tasks. Recent works show that parameterized quantum circuits (PQCs) can be
Ding, Li, Spector, Lee
openaire   +2 more sources

Optimal H2 Moment Matching-Based Model Reduction for Linear Systems through (Non)convex Optimization

open access: yesMathematics, 2022
In this paper, we compute a (local) optimal reduced order model that matches a prescribed set of moments of a stable linear time-invariant system of high dimension. We fix the interpolation points and parametrize the models achieving moment-matching in a
Ion Necoara, Tudor-Corneliu Ionescu
doaj   +1 more source

SINUSOIDAL SIGNAL PARAMETERS IDENTIFICATION WITH UNKNOWN VARIABLE AMPLITUDE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2018
The paper considers the problem of the frequency identification for a biased sinusoidal signal in the absence of measurement noise. It is assumed that the displacement and amplitude of the sinusoidal signal are unknown functions of time.
Le Van Tuan, Bobtsov A. A.
doaj   +1 more source

Third post-Newtonian accurate generalized quasi-Keplerian parametrization for compact binaries in eccentric orbits

open access: yes, 2004
We present Keplerian-type parametrization for the solution of third post-Newtonian (3PN) accurate equations of motion for two non-spinning compact objects moving in an eccentric orbit.
B. F. Schutz   +10 more
core   +1 more source

Hamiltonian Formulation of Two Body Problem in Wheeler-Feynman electrodynamics [PDF]

open access: yes, 1994
A Hamiltonian formulation for the classical problem of electromagnetic interaction of two charged relativistic particles is found.Comment: 22 pages, 8 Uuencoded Postscript ...
A. D. Fokker   +7 more
core   +3 more sources

The Thouless theorem for matrix product states and subsequent post-density matrix renormalization group methods [PDF]

open access: yes, 2013
The similarities between Hartree-Fock (HF) theory and the density-matrix renormalization group (DMRG) are explored. Both methods can be formulated as the variational optimization of a wave-function ansatz.
Chan, Garnet Kin-Lic   +3 more
core   +4 more sources

Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches

open access: yesPhysics Letters B, 2017
The neutrino masses and flavor mixings, which are missing in the Standard Model (SM), can be naturally incorporated in the type-I seesaw extension of the SM with heavy Majorana neutrinos being singlet under the SM gauge group.
Arindam Das, Nobuchika Okada
doaj   +1 more source

Optimizing Variational Quantum Algorithms Using Pontryagin’s Minimum Principle

open access: yesPhysical Review X, 2017
We use Pontryagin’s minimum principle to optimize variational quantum algorithms. We show that for a fixed computation time, the optimal evolution has a bang-bang (square pulse) form, both for closed and open quantum systems with Markovian decoherence ...
Zhi-Cheng Yang   +4 more
doaj   +1 more source

Supporting the search for the CEP location with nonlocal PNJL models constrained by Lattice QCD [PDF]

open access: yes, 2016
We investigate the possible location of the critical endpoint in the QCD phase diagram based on nonlocal covariant PNJL models including a vector interaction channel.
Blaschke, David   +2 more
core   +2 more sources

Macro-microscopic Calculation of Five-dimensional Potential Energy Surface for 234U Fission

open access: yesYuanzineng kexue jishu, 2022
A key question about the fission process of a heavy nucleus is to probe the nuclear potential energy landscape and its evolution from the single groundstate compound nucleus over the top of the fission barrier and further to the scission point, finally ...
ZHU Xin;WANG Zhiming;LUO Changkai;NI Lei;ZHONG Chunlai;FAN Tieshuan
doaj  

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