SelectedWorks - Nikolai Prokof'ev

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Selected Works of Nikolai Prokof'ev

Professor, Physics Department

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About Nikolai Prokof'ev

Present	Professor, Physics Department, University of Massachusetts Amherst
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Physics

Hasbrouck Lab 406
University of Massachusetts Amherst
Amherst MA, 01003
Tel: 413-545-0584
Fax: 413-545-0648

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Article

Comment on “Direct Mapping of the Finite Tem- perature Phase ...

Physical Review Letters (2010)

L Pollet, N Prokof’ev and B Svistunov

In their Letter, Zhou, Kato, Kawashima, and Trivedi claim that finite-temperature critical points of strongly correlated quantum models emulated by ...

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Article

Berezinskii-Kosterlitz-Thouless Transition in Two-Dimensional Dipole Systems

Physics Review Letters (2010)

A Filinov, N Prokof'ev and M Bonitz

The superfluid to normal fluid transition of dipolar bosons in two dimensions is studied in a broad density range by ...

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Article

Critical entropies for magnetic ordering in bosonic mixtures on a ...

Physics Review A (2010)

B Capogrosso-Sansone, S Soyler, N Prokof'ev and B Svistunov

We perform a numeric study (Worm algorithm Monte Carlo simulations) of ultracold two-component bosons in two- and three-dimensional optical lattices. ...

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Article

Criticality in Trapped Atomic Systems

Physics Review Letters (2010)

L Pollet, Nikolai Prokof'ev and Boris Svistunov

We discuss generic limits posed by the trap in atomic systems on the accurate determination of critical parameters for second-order ...

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Article

Diagrammatic Monte Carlo for correlated fermions

EPL (Europhysics Letters) (2010)

E Kozik, K Houcke, E Gull, L. Pollet, et al.

We show that Monte Carlo sampling of the Feynman diagrammatic series (DiagMC) can be used for tackling hard fermionic quantum ...

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Article

Dilute Bose gas with correlated disorder: a path integral Monte ...

New Journal of Physics (2010)

S Pilati, S Giorgini, M Modugno and Nikolai Prokof'ev

We investigate the thermodynamic properties of a dilute Bose gas in a correlated random potential using exact path integral Monte ...

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Other

Incorporating Dynamic Mean-Field Theory into Diagrammatic Monte Carlo

Physics Department Faculty Publication Series (2010)

L Pollet, Nikolai Prokof'ev and Boris Svistunov

The bold diagrammatic Monte Carlo (BDMC) method performs an unbiased sampling of Feyn- man's diagrammatic series using skeleton diagrams. For ...

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Article

Regularization of Diagrammatic Series with Zero Convergence Radius

Physics Review Letters (2010)

L Pollet, Nikolai Prokof'ev and Boris Svistunov

The divergence of perturbative expansions which occurs for the vast majority of macroscopic systems and follows from Dyson’s collapse argument ...

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Article

Sharp Transition for Single Polarons in the One-Dimensional Su-Schrieffer-Heeger Model

Physics Review Letters (2010)

D Marchand, G De Filippis, V Cataudella, M Berciu, et al.

We study a single polaron in the Su-Schrieffer-Heeger (SSH) model using four different techniques (three numerical and one analytical). Polarons ...

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Article

Suppression of the critical temperature for superfluidity near the Mott ...

Nature Physics (2010)

S Trotzky, L Pollet, F Gerbier, U Schnorrberger, et al.

Ultracold atomic gases in optical lattices have proven to be a controllable, tunable and clean implementation of strongly interacting quantum ...

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Article

The Beliaev technique for a weakly interacting Bose gas

New Journal of Physics (2010)

B Capogrosso-Sansone, S Giorgini, S Pilati, L. Pollet, et al.

Aiming at simplicity of explicit equations and, at the same time, controllable accuracy of the theory, we present our results ...

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Article

Topological multicritical point in the phase diagram of the toric ...

Physics Review B (2010)

I Tupitsyn, A Kitaev, Nikolai Prokof'ev and P.C.E Stamp

We construct a mapping between the two-dimensional toric code model in external magnetic fields, hz and hx, and the three-dimensional ...

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Other

Worm Algorithm for Problems of Quantum and Classical Statistics

Physics Department Faculty Publication Series (2010)

Nikolai Prokof'ev and Boris Svistunov

This is a chapter of the multi-author book “Understanding Quantum Phase Transitions,” edited by Lincoln Carr and published by Taylor ...

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Article

Absence of a Direct Superfluid to Mott Insulator Transition in ...

Physics Review Letters (2009)

L Pollet, N Prokof'ev, B Svistunov and Troyer

We prove the absence of a direct quantum phase transition between a superfluid and a Mott insulator in a bosonic ...

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Other

Collective dynamics of interacting Ising spins: Exact results for the ...

Physics Department Faculty Publication Series (2009)

A Burin, N Prokof'ev and I Tupitsyn

We study the low temperature dynamics in films made of molecular magnets, i. e. crystals composed of molecules having large ...

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Article

Phase diagram of the disordered Bose-Hubbard model

Physics Review B (2009)

V Gurarie, L Pollet, Nikolai Prokof'ev, Boris Svistunov, et al.

We establish the phase diagram of the disordered three-dimensional Bose-Hubbard model at unity filling which has been controversial for many ...

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Article

Sign-alternating interaction mediated by strongly correlated lattice bosons

New Journal of Physics (2009)

S Söyler, B Capogrosso-Sansone, Nikolai Prokof'ev and Boris Svistunov

We reveal a generic mechanism of generating sign-alternating intersite interactions mediated by strongly correlated lattice bosons. The ground-state phase diagram ...

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Article

Superfluid Transition in a Bose Gas with Correlated Disorder

Physics Review Letters (2009)

S Pilati, S Giorgini and Nikolai Prokof'ev

The superfluid transition of a three-dimensional gas of hard-sphere bosons in a disordered medium is studied using quantum Monte Carlo ...

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Article

Underlying Mechanism for the Giant Isochoric Compressibility of Solid 4He ...

Physics Review Letters (2009)

S Söyler, A Kuklov, L Pollet, Nikolai Prokof'ev, et al.

In the experiment on superfluid transport in solid 4He [Phys. Rev. Lett. 100, 235301 (2008)], Ray and Hallock observed an ...

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Article

Binding of a 3He Impurity to a Screw Dislocation in ...

Physics Review Letters (2008)

P Corboz, L Pollet, N Prokof'ev and M Troyer

Using first-principles simulations for the probability density of finding a 3He atom in the vicinity of the screw dislocation in ...

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Article

Bold diagrammatic Monte Carlo: A generic sign-problem tolerant technique for ...

Physics Review B (2008)

N Prokof'ev and B Svistunov

We develop a Monte Carlo scheme for sampling series of Feynman diagrams for the proper self-energy, which are self-consistently expressed ...

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Other

Comment on ``Comparative study of Higgs transition in one-component and ...

Physics Department Faculty Publication Series (2008)

A Kuklov, M Matsumoto, N Prokof'ev, B Svistunov, et al.

We comment on the claim of continuous phase transition in the SU(2) symmetric Deconfined Critical Point action made by O.Motrunich ...

Article

Critical Temperature Curve in BEC-BCS Crossover

Physics Review Letters (2008)

E Burovski, E Kozik, N Prokof'ev, B Svistunov, et al.

The strongly correlated regime of the crossover from Bardeen-Cooper-Schrieffer pairing to Bose-Einstein condensation can be realized by diluting a system ...

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Article

Critical Temperature of Interacting Bose Gases in Two and Three ...

Physics Review Letters (2008)

S Pilati, S Giorgini and N Prokof’ev

We calculate the superfluid transition temperature of homogeneous interacting Bose gases in three and two spatial dimensions using large-scale path ...

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Other

Diagrammatic Monte Carlo

Physics Department Faculty Publication Series (2008)

K Houcke, E Kozik, Nikolai Prokof'ev and Boris Svistunov

Diagrammatic Monte Carlo (DiagMC) is a numeric technique that allows one to calculate quantities specified in terms of diagrammatic expansions, ...

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