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Showing 1 to 9 of 9 entries
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Vortex Pinning and Dynamics in the Neutron Star Crust.

Physical review letters

Wlazłowski G, Sekizawa K, Magierski P, Bulgac A, Forbes MM.
PMID: 27982659
Phys Rev Lett. 2016 Dec 02;117(23):232701. doi: 10.1103/PhysRevLett.117.232701. Epub 2016 Nov 30.

The nature of the interaction between superfluid vortices and the neutron star crust, conjectured by Anderson and Itoh in 1975 to be at the heart vortex creep and the cause of glitches, has been a long-standing question in astrophysics....

Novel Role of Superfluidity in Low-Energy Nuclear Reactions.

Physical review letters

Magierski P, Sekizawa K, Wlazłowski G, Salerno JP.
PMID: 29341768
Phys Rev Lett. 2017 Jul 28;119(4):042501. doi: 10.1103/PhysRevLett.119.042501. Epub 2017 Jul 25.

We demonstrate, within symmetry unrestricted time-dependent density functional theory, the existence of new effects in low-energy nuclear reactions which originate from superfluidity. The dynamics of the pairing field induces solitonic excitations in the colliding nuclear systems, leading to qualitative...

Auxiliary-field quantum Monte Carlo simulations of neutron matter in chiral effective field theory.

Physical review letters

Wlazłowski G, Holt JW, Moroz S, Bulgac A, Roche KJ.
PMID: 25396365
Phys Rev Lett. 2014 Oct 31;113(18):182503. doi: 10.1103/PhysRevLett.113.182503. Epub 2014 Oct 30.

We present variational Monte Carlo calculations of the neutron matter equation of state using chiral nuclear forces. The ground-state wave function of neutron matter, containing nonperturbative many-body correlations, is obtained from auxiliary-field quantum Monte Carlo simulations of up to...

Suppressed Solitonic Cascade in Spin-Imbalanced Superfluid Fermi Gas.

Physical review letters

Wlazłowski G, Sekizawa K, Marchwiany M, Magierski P.
PMID: 29979062
Phys Rev Lett. 2018 Jun 22;120(25):253002. doi: 10.1103/PhysRevLett.120.253002.

Cold atoms experiments offer invaluable information on superfluid dynamics, including decay cascades of topological defects. While the cascade properties are well established for Bose systems, our understanding of their behavior in Fermi counterparts is very limited, in particular in...

Finite-temperature pairing gap of a unitary fermi gas by quantum monte carlo calculations.

Physical review letters

Magierski P, Wlazłowski G, Bulgac A, Drut JE.
PMID: 20366021
Phys Rev Lett. 2009 Nov 20;103(21):210403. doi: 10.1103/PhysRevLett.103.210403. Epub 2009 Nov 19.

We calculate the one-body temperature Green's (Matsubara) function of the unitary Fermi gas via quantum Monte Carlo, and extract the spectral weight function A(p,omega) using the methods of maximum entropy and singular value decomposition. From A(p,omega) we determine the...

Onset of a pseudogap regime in ultracold Fermi gases.

Physical review letters

Magierski P, Wlazłowski G, Bulgac A.
PMID: 22107208
Phys Rev Lett. 2011 Sep 30;107(14):145304. doi: 10.1103/PhysRevLett.107.145304. Epub 2011 Sep 27.

We show, using an ab initio approach based on Quantum Monte Carlo technique, that the pseudogap regime emerges in ultracold Fermi gases close to the unitary point. We locate the onset of this regime at a value of the...

Cooper pairing above the critical temperature in a unitary Fermi gas.

Physical review letters

Wlazłowski G, Magierski P, Drut JE, Bulgac A, Roche KJ.
PMID: 23496691
Phys Rev Lett. 2013 Mar 01;110(9):090401. doi: 10.1103/PhysRevLett.110.090401. Epub 2013 Feb 26.

We present an ab initio determination of the spin response of the unitary Fermi gas. Based on finite temperature quantum Monte Carlo calculations and the Kubo linear-response formalism, we determine the temperature dependence of the spin susceptibility and the...

Quantized superfluid vortex rings in the unitary Fermi gas.

Physical review letters

Bulgac A, Forbes MM, Kelley MM, Roche KJ, Wlazłowski G.
PMID: 24484022
Phys Rev Lett. 2014 Jan 17;112(2):025301. doi: 10.1103/PhysRevLett.112.025301. Epub 2014 Jan 16.

In a recent article, Yefsah et al. [Nature (London) 499, 426 (2013)] report the observation of an unusual excitation in an elongated harmonically trapped unitary Fermi gas. After phase imprinting a domain wall, they observe oscillations almost an order...

Shear viscosity of a unitary Fermi gas.

Physical review letters

Wlazłowski G, Magierski P, Drut JE.
PMID: 23030136
Phys Rev Lett. 2012 Jul 13;109(2):020406. doi: 10.1103/PhysRevLett.109.020406. Epub 2012 Jul 12.

We present an ab initio determination of the shear viscosity η of the unitary Fermi gas, based on finite temperature quantum Monte Carlo calculations and the Kubo linear-response formalism. We determine the temperature dependence of the shear viscosity-to-entropy density...

Showing 1 to 9 of 9 entries