Phase diagram and magnetic excitations of anisotropic spin-one magnets by Batista, Cristian D., Zhang, Zhifeng, Wierschem, Keola, Yap, Ian, Kato, Yasuyuki, Sengupta, Pinaki

“…We use a generalized spin wave approach and large scale quantum Monte Carlo (QMC) simulations to study the quantum phase diagram and quasiparticle excitations of the S=1 Heisenberg model with an easy-plane single-ion anisotropy in dimensions d=2 and 3. …”
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Theoretical and computational aspects of new lattice fermion formulations by Zielinski, Christian

“…Originally proposed by Adams, these new fermion discretizations bear the potential to reduce the computational costs of state-of-the-art Monte Carlo simulations. Staggered Wilson fermions combine aspects of both staggered and Wilson fermions while having a reduced number of fermion doublers compared to usual staggered fermions. …”
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Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy by Batista, Cristian D., Wierschem, Keola, Kato, Yasuyuki, Nishida, Yusuke, Sengupta, Pinaki

“…We com- pute the (D/J,B/J) quantum phase diagram for square and simple cubic lattices by combining an- alytical and Quantum Monte Carlo approaches, and find a transition between XY-antiferromagnetic and ferronematic phases that spontaneously break the U(1) symmetry of the model. …”
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A physical unclonable function based true random number generator by Ding, Zhaojian

“…Random number is used in various fields: Monte Carlo simulation, cryptography, factorizing large integers, games and gambling etc. …”
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Enhancing fiber atom interferometer by in-fiber laser cooling by Wang, Yu

“…In the atom loading simulation, I employ the Monte Carlo method to study the dynamics of the loading process. …”
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Strange correlations in spin-1 Heisenberg antiferromagnets by Wierschem, Keola, Sengupta, Pinaki

“…Lett. 112, 247202 (2014)] in spin-1 Heisenberg antiferromagnetic chains with uniaxial single-ion anisotropy. Using projective quantum Monte Carlo, we are able to directly access the strange correlator in a variety of phases, as well as to examine its critical behavior at a quantum phase transition between trivial and nontrivial symmetry protected topological phases. …”
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Magnetization plateaus in generalized Shastry-Sutherland models by Wierschem, Keola, Sengupta, Pinaki

“…We study an anisotropic Heisenberg antiferromagnet with ferromagnetic transverse spin exchange using exact quantum Monte Carlo methods. Such a model is relevant to a class of rare earth tetraboride materials that display a range of magnetization plateaus under applied magnetic field. …”
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Suppression of gapless edge states in interaction driven topological insulators by Thayalan Raman

“…A numerical method by the name of stochastic series expansion, a branch of Quantum Monte Carlo methods, is used to run the simulations for finite length models. …”
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Loading dynamics of cold atoms into a hollow-core photonic crystal fiber by Wang, Yu, Chai, Shijie, Xin, Mingjie, Leong, Wui Seng, Chen, Zilong, Lan, Shau-Yu

“…Here, we provide a numerical study of the loading dynamics of cold atoms into a hollow-core photonic crystal fiber. We use the Monte Carlo method to simulate the trajectories of an ensemble of cold atoms from free space trapping potential to optical potential inside a hollow-core fiber and calculate the temperature, loading efficiency, and geometry of the ensemble. …”
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Induced magnetism versus Kondo screening in alternating Mott-metal layers by Zujev, Aleksander, Sengupta, Pinaki

“…Results from large-scale quantum Monte Carlo simulations at half-filling show clear evidence of induced magnetism in the metallic layers due to coupling to the Mott insulating layers at small to intermediate values of interlayer hopping. …”
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Magnetization plateaus and supersolid phases in an extended Shastry–Sutherland model by Wierschem, Keola, Zhang, Zhifeng, Wibawa, Andrew, Sengupta, Pinaki

“…Using a plaquette representation and exact mapping of ground state configurations in the Ising limit, supplemented by large scale quantum Monte Carlo simulations to include the effects of exchange interactions, we have identified several magnetization plateaus and associated spin supersolid phases. …”
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Single photon detection and manipulation in photonic integrated circuits by Yanikgonul, Salih

“…The devices with p-n + and p-i-n + junction structures and various geometries are investigated, and 2D Monte Carlo simulations are performed in order to optimize device performance. …”
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Giant enhancement of unconventional photon blockade in a dimer chain by Wang, You, Verstraelen, W., Zhang, Baile, Liew, Timothy Chi Hin, Chong, Yidong

“…The analytic derivation, based on a weak drive approximation, is validated by wave function Monte Carlo simulations. These findings show that customized lattices of coupled resonators can be powerful tools for controlling multiphoton quantum states.…”
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Berry curvature of interacting bosons in a honeycomb lattice by Li, Yun, Sengupta, Pinaki, Batrouni, George G., Miniatura, Christian, Grémaud, Benoît

“…Using both a mean-field approach and quantum Monte Carlo simulations, we show that the topology of the honeycomb lattice results in a nonvanishing Berry curvature for the band structure of the single-particle excitations of the system. …”
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Interaction-Driven Metal-Insulator Transition in Strained Graphene by Tang, Ho-Kin, Laksono, E., Rodrigues, J. N. B., Sengupta, Pinaki, Adam, S., Assaad, F. F.

“…Using three representative methods to calculate the effective long-range Coulomb interaction between π electrons in graphene and solving for the ground state using quantum Monte Carlo methods, we argue that, without strain, graphene remains metallic and changing the substrate from SiO2 to suspended samples hardly makes any difference. …”
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Finite temperature dynamics of a Holstein polaron : the thermo-field dynamics approach by Chen, Lipeng, Zhao, Yang

“…The method of thermo-field dynamics handles temperature effects in the Hilbert space with key numerical advantages over other treatments of finite-temperature dynamics based on quantum master equations in the Liouville space or wave function propagation with Monte Carlo importance sampling. …”
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Investigation of optimal concentration of QDs on the performance of QD-based luminescent solar concentrators by Faysal, Atik, Nahar, Mst Tajmun, Nawar, Nafiu, Kaysir, Md Rejvi, Jahirul Islam, Md Jahirul

“…Here, an effective Monte Carlo ray-tracing simulation model is developed incorporating all loss mechanisms of LSCs to study the optimal concentration of QDs for a given LSC structure that provides the maximum optical efficiency. …”
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Skyrmion-driven topological Hall effect in a Shastry-Sutherland magnet by Swain, N., Shahzad, M., Paradezhenko, G. V., Pervishko, A. A., Yudin, D., Sengupta, Pinaki

“…Our results, employing complementary Monte Carlo simulations and a novel machine learning analysis to investigate the magnetic phases, provide evidence for field-driven skyrmion crystal formation for an extended range of Hamiltonian parameters. …”
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The hierarchy of Davydov’s Ansätze: from guesswork to numerically “exact” many-body wave functions by Zhao, Yang

“…Three finite-temperature extensions to the time-dependent variation scheme are elaborated, i.e., the Monte Carlo importance sampling, the method of thermofield dynamics, and the method of displaced number states. …”
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Hierarchical approach to study water cluster in first-principles calculations by Nguyen, Quoc Chinh

“…The accuracy of harmonic superposition approximation has been tested by comparing the results with the ones predicted by Monte Carlo simulations. The finite temperature effects, the structural transitions as well as the thermodynamic profile of each kind of water for different sizes have been investigated systematically. …”
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