Results 121 to 130 of about 637,276 (316)

Alternative sampling for variational quantum Monte Carlo

, 2009
Expectation values of physical quantities may accurately be obtained by the evaluation of integrals within Many-Body Quantum mechanics, and these multi-dimensional integrals may be estimated using Monte Carlo methods.
A. J. Izenman, B. V. Gnedenko, D. W. Stroock, E. Fieller, J. R. Trail, R. J. Needs, U. von Luxburg   +6 more
core   +1 more source

Quantum Monte Carlo Methods [PDF]

Progress of Theoretical Physics Supplement, 2002
Recent developments in Monte Carlo methods for condensed matter physics are reviewed with the emphasis on the world-line Monte Carlo methods and their applications to quantum spin models.
openaire   +1 more source

Imperfection in Semiconductors Leading to High Performance Devices

Advanced Science, EarlyView.
Crystalline perfection is typically pursued in semiconductors to enhance device performance. However, through modeling and experimental work, we show that defects can be strategically employed in a specific detection regime to increase sensitivity to extreme values. GaN diodes are demonstrated to effectively detect high‐energy proton beams at fluxes as
Jean‐Yves Duboz, Matilde Siviero, Lucas Lesourd, Eric Frayssinet, Sebastien Chenot, Petter Hofverberg, Sullivan Marafico, Marie Vidal, Maxime Hugues   +8 more
wiley   +1 more source

Quantum Monte Carlo study of circular quantum dots in presence of Rashba interaction

, 2010
We present the numerical Quantum Monte Carlo results for the ground state energy of circular quantum dots in which Rashba spin-orbit iteraction is present.
Ambrosetti, A., Lipparini, E., Pederiva, F.   +2 more
core   +1 more source

Van der Waals clusters in the ultra-quantum limit: a Monte Carlo study [PDF]

, 1996
Bosonic van der Waals clusters of sizes three, four and five are studied by diffusion quantum Monte-Carlo techniques. In particular we study the unbinding transition, the ultra-quantum limit where the ground state ceases to exist as a bound state.
Meierovich, M., Mushinski, A., Nightingale, M. P.   +2 more
core   +3 more sources

Quantum Monte Carlo Simulation of Frustrated Kondo Lattice Models. [PDF]

Physical Review Letters, 2017
The absence of the negative sign problem in quantum Monte Carlo simulations of spin and fermion systems has different origins. World-line based algorithms for spins require positivity of matrix elements whereas auxiliary field approaches for fermions ...
Toshihiro Sato, F. Assaad, T. Grover
semanticscholar   +1 more source

A Quest for the Mechanism of Ultrahigh Resolution SEM Imaging

Advanced Science, EarlyView.
Using Monte Carlo simulations with explicit definitions of SE1 and SE2 align with a cascade secondary electron production model, this work shows that the 3D nanostructure modulated SE2 emission enhances other than to reduce topographical contrast via a “miniature Faraday cup” effect.
Hao Tian Chen, Y.B. Zou, B. Da, Z.J. Ding   +3 more
wiley   +1 more source

Dilute neutron star matter from neural-network quantum states

Physical Review Research, 2023
Low-density neutron matter is characterized by fascinating emergent quantum phenomena, such as the formation of Cooper pairs and the onset of superfluidity.
Bryce Fore, Jane M. Kim, Giuseppe Carleo, Morten Hjorth-Jensen, Alessandro Lovato, Maria Piarulli   +5 more
doaj   +1 more source

Transition matrix Monte Carlo method for quantum systems

, 2003
We propose an efficient method for Monte Carlo simulation of quantum lattice models. Unlike most other quantum Monte Carlo methods, a single run of the proposed method yields the free energy and the entropy with high precision for the whole range of ...
Berg B. A., de Oliveira P. M. C., Evertz H. G., Janke W., Kandel D., Kawashima N., Kawashima N., Lee J., Metropolis N., Sandvik A. W., Sandvik A. W., Swendsen R., Syljuåsen O. F., Troyer M., Wang F., Wang J.-S., Yamaguchi C., Yamaguchi C.   +17 more
core   +1 more source

The Interplay of Magnetic Order with the Electronic Scattering and Crystal‐Field Effects in a Metallic Ferromagnet

Advanced Science, EarlyView.
The interplay between magnetic ordering and crystal electric field (CEF) excitations plays a pivotal role in defining the low‐energy electrodynamics of quantum materials. By probing the temperature‐dependent THz conductivity in a rare‐earth‐based metallic ferromagnet, we uncover a microscopic connection between localized and itinerant electrons ...
Payel Shee, Tanaya Halder, Chia‐Jung Yang, Nainish Tickoo, Ratiranjan Samal, Ruta Kulkarni, Shishir K. Pandey, Vikas Kashid, Ashis K. Nandy, Arumugam Thamizhavel, Anamitra Mukherjee, Shovon Pal   +11 more
wiley   +1 more source