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Comment on “Direct Mapping of the Finite Tem- perature Phase Diagram of Strongly Correlated Quantum Models” (with L Pollet and B Svistunov), Physical Review Letters (2010)
In their Letter, Zhou, Kato, Kawashima, and Trivedi claim that finite-temperature critical points of strongly...
Regularization of Diagrammatic Series with Zero Convergence Radius (with L Pollet and Boris Svistunov), Physical Review Letters (2010)
The divergence of perturbative expansions which occurs for the vast majority of macroscopic systems and...
Berezinskii-Kosterlitz-Thouless Transition in Two-Dimensional Dipole Systems (with A Filinov and M Bonitz), Physical Review Letters (2010)
The superfluid to normal fluid transition of dipolar bosons in two dimensions is studied in...
Dilute Bose gas with correlated disorder: a path integral Monte Carlo study (with S Pilati, S Giorgini, and M Modugno), New Journal of Physics (2010)
We investigate the thermodynamic properties of a dilute Bose gas in a correlated random potential...
Critical entropies for magnetic ordering in bosonic mixtures on a lattice (with B Capogrosso-Sansone, S Soyler, and B Svistunov), Physical Review A (2010)
We perform a numeric study (Worm algorithm Monte Carlo simulations) of ultracold two-component bosons in...
Criticality in Trapped Atomic Systems (with L Pollet and Boris Svistunov), Physical Review Letters (2010)
We discuss generic limits posed by the trap in atomic systems on the accurate determination...
Diagrammatic Monte Carlo for correlated fermions (with E Kozik, K Houcke, E Gull, L. Pollet, Boris Svistunov, and m Troyer), Europhysics Letters (2010)
We show that Monte Carlo sampling of the Feynman diagrammatic series (DiagMC) can be used...
Incorporating Dynamic Mean-Field Theory into Diagrammatic Monte Carlo (with L Pollet and Boris Svistunov), Physics Department Faculty Publication Series (2010)
The bold diagrammatic Monte Carlo (BDMC) method performs an unbiased sampling of Feyn- man's diagrammatic...
Sharp Transition for Single Polarons in the One-Dimensional Su-Schrieffer-Heeger Model (with D Marchand, G De Filippis, V Cataudella, M Berciu, N Nagaosa, A Mishchenko, and P Stamp), Physical Review Letters (2010)
We study a single polaron in the Su-Schrieffer-Heeger (SSH) model using four different techniques (three...
Suppression of the critical temperature for superfluidity near the Mott transition (with S Trotzky, L Pollet, F Gerbier, U Schnorrberger, I Bloch, Boris Svistunov, and M Troyer), Nature Physics (2010)
Ultracold atomic gases in optical lattices have proven to be a controllable, tunable and clean...
The Beliaev technique for a weakly interacting Bose gas (with B Capogrosso-Sansone, S Giorgini, S Pilati, L. Pollet, B Svistunov, and M Troyer), New Journal of Physics (2010)
Aiming at simplicity of explicit equations and, at the same time, controllable accuracy of the...
Topological multicritical point in the phase diagram of the toric code model and three-dimensional lattice gauge Higgs model (with I Tupitsyn, A Kitaev, and P.C.E Stamp), Physical Review B (2010)
We construct a mapping between the two-dimensional toric code model in external magnetic fields, hz...
Worm Algorithm for Problems of Quantum and Classical Statistics (with Boris Svistunov), Physics Department Faculty Publication Series (2010)
This is a chapter of the multi-author book “Understanding Quantum Phase Transitions,” edited by Lincoln...
Underlying Mechanism for the Giant Isochoric Compressibility of Solid 4He: Superclimb of Dislocations (with S Söyler, A Kuklov, L Pollet, and Boris Svistunov), Physical Review Letters (2009)
In the experiment on superfluid transport in solid 4He [Phys. Rev. Lett. 100, 235301 (2008)],...
Superfluid Transition in a Bose Gas with Correlated Disorder (with S Pilati and S Giorgini), Physical Review Letters (2009)
The superfluid transition of a three-dimensional gas of hard-sphere bosons in a disordered medium is...
Absence of a Direct Superfluid to Mott Insulator Transition in Disordered Bose Systems (with L Pollet, B Svistunov, and Troyer), Physical Review Letters (2009)
We prove the absence of a direct quantum phase transition between a superfluid and a...
Collective dynamics of interacting Ising spins: Exact results for the Bethe lattice (with A Burin and I Tupitsyn), Physics Department Faculty Publication Series (2009)
We study the low temperature dynamics in films made of molecular magnets, i. e. crystals...
Phase diagram of the disordered Bose-Hubbard model (with V Gurarie, L Pollet, Boris Svistunov, and M Troyer), Physical Review B (2009)
We establish the phase diagram of the disordered three-dimensional Bose-Hubbard model at unity filling which...
Sign-alternating interaction mediated by strongly correlated lattice bosons (with S Söyler, B Capogrosso-Sansone, and Boris Svistunov), New Journal of Physics (2009)
We reveal a generic mechanism of generating sign-alternating intersite interactions mediated by strongly correlated lattice...
Binding of a 3He Impurity to a Screw Dislocation in Solid 4He (with P Corboz, L Pollet, and M Troyer), Physical Review Letters (2008)
Using first-principles simulations for the probability density of finding a 3He atom in the vicinity...
Local Stress and Superfluid Properties of Solid 4He (with L Pollet, M Boninsegni, A Kuklov, Boris Svistunov, and M Troyer), Physical Review Letters (2008)
We provide a semiquantitative tool, derived from first-principles simulations, for answering the question of whether...
Bold diagrammatic Monte Carlo: A generic sign-problem tolerant technique for polaron models and possibly interacting many-body problems (with B Svistunov), Physical Review B (2008)
We develop a Monte Carlo scheme for sampling series of Feynman diagrams for the proper...
Comment on ``Comparative study of Higgs transition in one-component and two-component lattice superconductor models" (with A Kuklov, M Matsumoto, B Svistunov, and M Troyer), Physics Department Faculty Publication Series (2008)
We comment on the claim of continuous phase transition in the SU(2) symmetric Deconfined Critical...
Critical Temperature Curve in BEC-BCS Crossover (with E Burovski, E Kozik, B Svistunov, and M Troyer), Physical Review Letters (2008)
The strongly correlated regime of the crossover from Bardeen-Cooper-Schrieffer pairing to Bose-Einstein condensation can be...
Critical Temperature of Interacting Bose Gases in Two and Three Dimensions (with S Pilati and S Giorgini), Physical Review Letters (2008)
We calculate the superfluid transition temperature of homogeneous interacting Bose gases in three and two...
Diagrammatic Monte Carlo (with K Houcke, E Kozik, and Boris Svistunov), Physics Department Faculty Publication Series (2008)
Diagrammatic Monte Carlo (DiagMC) is a numeric technique that allows one to calculate quantities specified...
Expansion of a Quantum Gas Released from an Optical Lattice (with F Gerbier, S Trotzky, S Fölling, U Schnorrberger, J Thompson, A Widera, I Bloch, L Pollet, M Troyer, B Capogrosso-Sansone, and Boris Svistunov), Physical Review Letters (2008)
We analyze the interference pattern produced by ultracold atoms released from an optical lattice, commonly...
Fermi-polaron problem: Diagrammatic Monte Carlo method for divergent sign-alternating series (with Boris Svistunov), Physical Review B (2008)
We use the diagrammatic Monte Carlo approach to solve the problem of a single spin-down...
Monte Carlo study of the two-dimensional Bose-Hubbard model (with B Capogrosso-Sansone, S Söyler, and Boris Svistunov), Physical Review A (2008)
One of the most promising applications of ultracold gases in optical lattices is the possibility...
Phase diagram of an anisotropic bosonic t-J model (with M Boninsegni), Physical Review B (2008)
We have studied by quantum Monte Carlo simulations the low temperature phase diagram of a...
Search for Deconfined Criticality: SU(2) D´ej`a Vu (with B Kuklov, M Matsumoto, Boris Svistunov, and M Troyer), Physics Department Faculty Publication Series (2008)
Monte Carlo simulations of the SU(2)-symmetric deconfined critical point action reveal strong violations of scale...
Superfluidity of Grain Boundaries in Solid 4He (with L Pollet, M Boninsegni, A Kuklov, Boris Svistunov, and M Troyer), Physical Review Letters (2007)
By large-scale quantum Monte Carlo simulations we show that grain boundaries in 4He crystals are...
Bold Diagrammatic Monte Carlo Technique: When the Sign Problem Is Welcome (with B Svistunov), Physical Review Letters (2007)
We introduce a Monte Carlo scheme for sampling a bold-line diagrammatic series specifying an unknown...
Luttinger Liquid in the Core of a Screw Dislocation in Helium-4 (with M Boninsegni, Kuklov, Pollet, Boris Svistunov, and Troyer), Physical Review Letters (2007)
On the basis of first-principles Monte Carlo simulations we find that the screw dislocation along...
On-site number statistics of ultracold lattice bosons (with B Capogrosso-Sansone, E Kozik, and Boris Svistunov), Physical Review A (2007)
We study on-site occupation number fluctuations in a system of interacting bosons in an optical...
Phase diagram and thermodynamics of the three-dimensional Bose-Hubbard model (with B Capogrosso-Sansone and Boris Svistunov), Physical Review B (2007)
We report results of quantum Monte Carlo simulations of the Bose-Hubbard model in three dimensions....
Superfluid-insulator and roughening transitions in domain walls (with S Söyler, Capogrosso-Sansone, and Boris Svistunov), Physical Review A (2007)
We have performed quantum Monte Carlo simulations to investigate the superfluid behavior of one- and...
What makes a crystal supersolid?, Advances in Physics (2007)
For nearly half a century the supersolid phase of matter has remained mysterious, not only...
Worm algorithm and diagrammatic Monte Carlo: A new approach to continuous-space path integral Monte Carlo simulations (with M Boninsegni and Boris Svistunov), Physical Review E (2006)
A detailed description is provided of a new worm algorithm, enabling the accurate computation of...
Fate of Vacancy-Induced Supersolidity in 4He (with M Boninsegni, A Kuklov, L Pollet, Boris Svistunov, and M Troyer), Physical Review Letters (2006)
The supersolid state of matter, exhibiting nondissipative flow in solids, has been elusive for 35...
Comment on “Hausdorff Dimension of Critical Fluctuations in Abelian Gauge Theories” (with B Svistunov), Physical Review Letters (2006)
A Comment on the Letter by J. Hove, S. Mo, and A. Sudbø Phys. Rev....
Critical Temperature and Thermodynamics of Attractive Fermions at Unitarity (with E Burovski, B Svistunov, and M Troyer), Physical Review Letters (2006)
The unitarity regime of the BCS-BEC crossover can be realized by diluting a system of...
Superglass Phase of 4He (with M Boninsegni and Boris Svistunov), Physical Review Letters (2006)
We study different solid phases of 4He, by means of path integral Monte Carlo simulations...
Worm Algorithm for Continuous-Space Path Integral Monte Carlo Simulations (with M Boninsegni and Boris Svistunov), Physical Review Letters (2006)
We present a new approach to path integral Monte Carlo (PIMC) simulations based on the...
Decoherence and quantum walks: Anomalous diffusion and ballistic tails (with P.C.E Stamp), Physical Review A (2006)
The common perception is that strong coupling to the environment will always render the evolution...
Deconfined criticality, runaway flow in the two-component scalar electrodynamics and weak first-order superfluid-solid transitions (with A Kuklov, Boris Svistunov, and M Troyer), Annals of Physics (2006)
We perform a comparative Monte Carlo study of the easy-plane deconfined critical point (DCP) action...
Effects of finite temperature on the Mott-insulator state (with G Pupillo and C Williams), Physical Review A (2006)
We investigate the effects of finite temperature on ultracold Bose atoms confined in an optical...
High-precision measurement of the thermal exponent for the three-dimensional XY universality class (with E Burovski, J Machta, and Boris Svistunov), Physical Review B (2006)
Simulation results are reported for the critical point of the two-component ϕ4 field theory. The...
The Fermi–Hubbard model at unitarity (with F Bourovski, Boris Svistunov, and M Troyer), New Journal of Physics (2006)
We simulate the dilute attractive Fermi–Hubbard model in the unitarity regime using a diagrammatic determinant...
Vortex-phonon interaction in the Kosterlitz-Thouless theory (with E Kozik and Boris Svistunov), Physical Review B (2006)
The “canonical” variables of the Kosterlitz-Thouless theory—fields Φ0(r) and φ(r), generally believed to stand for...
Superfluid-Insulator Transition in a Commensurate One-Dimensional Bosonic System with Off-Diagonal Disorder (with K Balabanyan and Boris Svistunov), Physical Review Letters (2005)
We study the nature of the superfluid-insulator quantum phase transition in a one-dimensional system of...
Supersolid State of Matter (with Boris Svistunov), Physical Review Letters (2005)
We prove that the necessary condition for a solid to be also a superfluid is...
Ginzburg-Landau-Wilson Aspects of Deconfined Criticality (with A Kuklov and Boris Svistunov), Physics Department Faculty Publication Series (2005)
Monte Carlo study of the deconfined critical action phase diagram reveals a region where spinon...
Reply to “Comment on ‘Hole digging in ensembles of tunneling molecular magnets’ ” (with I Tupitsyn and P Stamp), Physical Review B (2005)
Our work has argued for a particular scaling form governing the distribution M(ξ,t) of magnetization...
Superfluid Interfaces in Quantum Solids (with E Bourovski, E. Kozik, A Kuklov, and Boris Svistunov), Physical Review Letters (2005)
One scenario for the nonclassical moment of inertia of solid 4He discovered by Kim and...
Supersolid Phase of Hard-Core Bosons on a Triangular Lattice (with M Boninsegni), Physical Review Letters (2005)
We study properties of the supersolid phase observed for hard-core bosons on the triangular lattice...
Truncated-Determinant Diagrammatic Monte Carlo for Fermions with Contact Interaction (with E Bourovski and Boris Svistunov), Physical Review B (2004)
For some models of interacting fermions the known solution to the notorious sign problem in...
Detecting supercounterfluidity by Ramsey spectroscopy (with A Kuklov and Boris Svistunov), Physical Review Letters (2004)
A two-component system of ultracold atoms in an optical lattice at integer total filling factor...
Commensurate Two-Component Bosons in an Optical Lattice: Ground State Phase Diagram (with A Kuklov and B Svistunov), Physical Review Letters (2004)
Two sorts of bosons in an optical lattice at commensurate filling factors can form five...
Hole digging in ensembles of tunneling molecular magnets (with I Tupitsyn and P Stamp), Physical Review B (2004)
The nuclear spin-mediated quantum relaxation of ensembles of tunneling magnetic molecules causes a “hole” to...
Superfluid-Insulator Transition in Commensurate Disordered Bosonic Systems: Large-Scale Worm Algorithm Simulations (with Boris Svistunov), Physical Review Letters (2004)
We report results of large-scale Monte Carlo simulations of superfluid-insulator transitions in disordered commensurate 2D...
Superfluid-Superfluid Phase Transitions in a Two-Component Bose-Einstein Condensate (with A Kuklov and Boris Svistunov), Physical Review Letters (2004)
Depending on the Hamiltonian parameters, two-component bosons in an optical lattice can form at least...
Truncated-determinant diagrammatic Monte Carlo for fermions with contact interaction (with E Bourovski and Boris Svistunov), Physical Review B (2004)
For some models of interacting fermions the known solution to the notorious sign problem in...
Weak First-Order Superfluid-Solid Quantum Phase Transitions (with A Kuklov and Boris Svistunov), Physical Review Letters (2004)
We study superfluid-solid zero-temperature transitions in two-dimensional lattice boson-spin models using worm-algorithm Monte Carlo simulations....
Weakly Interacting Bose Gas in the Vicinity of the Critical Point (with O Ruebenacker and Boris Svistunov), Physics Department Faculty Publication Series (2004)
We consider a three-dimensional weakly interacting Bose gas in the fluctuation region (and its vicinity)...
Frustrated Spin Model as a Hard-Sphere Liquid (with M Mostovoy, D Khomskii, and J Knoester), Physical Review Letters (2003)
We show that one-dimensional topological objects (kinks) are natural degrees of freedom for an antiferromagnetic...
Comment on “Phase Diagram of a Disordered Boson Hubbard Model in Two Dimensions” (with B Svistunov), Physical Review Letters (2003)
In a recent Letter [1] (see also [2]) the authors presented numerical evidence supporting an...
Incoherent dynamics of vibrating single-molecule transistors (with K McCarthy, and M Tuominen), Physical Review B (2003)
We study the tunneling conductance of nanoscale quantum “shuttles” in connection with a recent experiment...
Optical Conductivity of the Fröhlich Polaron (with Atanas Mishchenko, N Nagaosa, A Sakamoto, and Boris Svistunov), Physical Review Letters (2003)
We present accurate results for optical conductivity of the three dimensional Fröhlich polaron in all...
Revealing the superfluid–Mott-insulator transition in an optical lattice (with V Kashurnikov and Boris Svistunov), Physical Review A (2002)
We study (by an exact numerical scheme) the single-particle density matrix of ∼103 ultracold atoms...
Self-trapping of polarons in the Rashba-Pekar model (with A Mishchenko, N Nagaosa, A Sakamoto, and B Svistunov), Physical Review B (2002)
We performed a quantum Monte Carlo study of the exciton-polaron model which features the self-trapping...
Two-dimensional weakly interacting Bose gas in the fluctuation region (with Boris Svistunov), Physical Review A (2002)
We study the crossover between the mean-field and critical behavior of the two-dimensional Bose gas...
Critical Point of a Weakly Interacting Two-Dimensional Bose Gas (with O Ruebenacker and B Svistunov), Physical Review Letters (2001)
We study the Berezinskii-Kosterlitz-Thouless transition in a weakly interacting 2D quantum Bose gas using the...
Critical Temperature Shift in Weakly Interacting Bose Gas (with V Kashurnikov and B Svistunov), Physical Review Letters (2001)
With a high-performance Monte Carlo algorithm we study the interaction-induced shift of the critical point...
Single-hole spectral function and spin-charge separation in the t-J model (with A Mishchenko and Boris Svistunov), Physical Review B (2001)
Worm algorithm Monte Carlo simulations of the hole Green function with subsequent spectral analysis were...
Diagrammatic Quantum Monte Carlo for Two-Body Problems: Applied to Excitons (with E Burovski, A Mishchenko, and B Svistunov), Physical Review Letters (2001)
We present a novel method for the precise numeric solution of the irreducible two-body problem...
Worm Algorithms for Classical Statistical Models (with Boris Svistunov), Physical Review Letters (2001)
We show that high-temperature expansions provide a basis for the novel approach to efficient Monte...
Comprehensive study of Fröhlich polaron (with A Mishchenko, B Svistunov, and A Sakamoto), EXCITONIC PROCESSES IN CONDENSED MATTER. Proceedings of 2000 International Conference. (2000)
A study of the Fröhlich polaron model is performed on the basis of diagrammatic quantum...
Spin bath-mediated decoherence in superconductors (with P.C.E Stamp), Physics Department Faculty Publication Series (2000)
We consider a SQUID tunneling between 2 nearly degenerate flux states. Decoherence caused by paramagnetic...
Supercurrent stability in a quasi-one-dimensional weakly interacting Bose gas (with Y Kagan and B Svistunov), Physical Review A (2000)
We discuss the possibility of observing superfluid phenomena in a quasi-one-dimensional weakly interacting Bose gas...
Theory of the spin bath (with P.C.E Stamp), Reports on Progress in Physics (2000)
The quantum dynamics of mesoscopic or macroscopic systems is always complicated by their coupling to...
Exact, complete, and universal continuous-time worldline Monte Carlo approach to the statistics of discrete quantum systems (with Boris Svistunov and Tupitsyn), Journal of Experimental and Theoretical Physics (1998)
We show how the worldline quantum Monte Carlo procedure, which usually relies on an artificial...
Effective Hamiltonian in the Problem of a "Central Spin" Coupled to a Spin Environment (with I Tupitsyn and P Stamp), International Journal of Modern Physics B (1997)
We consider here the problem of a "giant spin", with spin quantum number S≫1, interacting...
Exact quantum Monte Carlo process for the statistics of discrete systems (with Boris Svistunov and I Tupitsyn), JETP Letters (1996)
We propose an exact Monte Carlo approach for the statistics of discrete quantum systems that...