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The relaxation of the collective quadrupole motion in the initial stage of a central heavy ion collision at beam energies $E_{lab}=5\div20$ AMeV is studied within a microscopic kinetic transport model. The damping rate is shown to be a…

Nuclear Theory · Physics 2011-01-25 A. B. Larionov , J. Piperova , M. Colonna , M. Di Toro

We investigate the compressional modes of cold neutron stars with cores consisting of superfluid neutrons, superconducting protons and normal fluid electrons and muons, and crusts that contain superfluid neutrons plus a normal fluid of…

High Energy Astrophysical Phenomena · Physics 2018-10-15 P. B. Rau , I. Wasserman

The $^1S_0$ superfluidity of neutron matter is studied in the framework of the generalized Gorkov equation. The vertex corrections to the pairing interaction and the self-energy corrections are introduced and approximated on the same…

Nuclear Theory · Physics 2009-11-07 Caiwan Shen , U. Lombardo , P. Schuck , W. Zuo , N. Sandulescu

We investigate the problem of periodically modulated strongly interacting neutron matter. We carry out ab initio non-perturbative auxiliary-field diffusion Monte Carlo calculations using an external sinusoidal potential in addition to…

Nuclear Theory · Physics 2017-04-11 Mateusz Buraczynski , Alexandros Gezerlis

$^{3}P_{2}$ pairing in neutron matter is investigated using the Bonn potential models. We find pairing energy gaps in pure neutron matter comparable to the results of previous investigators when the attractive tensor coupling is included.…

Nuclear Theory · Physics 2009-10-30 Oe. Elgaroey , L. Engvik , M. Hjorth-Jensen , E. Osnes

Low-density neutron matter is characterized by fascinating emergent quantum phenomena, such as the formation of Cooper pairs and the onset of superfluidity. We model this density regime by capitalizing on the expressivity of the…

Nuclear Theory · Physics 2022-12-09 Bryce Fore , Jane M. Kim , Giuseppe Carleo , Morten Hjorth-Jensen , Alessandro Lovato

We study the properties of spin-polarized neutron matter at next-to-next-to-next-to-leading order in chiral effective field theory, including two-, three-, and four-neutron interactions. The energy of spin-polarized neutrons is remarkably…

Nuclear Theory · Physics 2016-02-22 T. Krüger , K. Hebeler , A. Schwenk

We study the density modulation of an interacting Fermi gas caused by the uniform motion of an impurity at zero temperature. For strong enough interaction among Fermi atoms, the modulation propagates thanks to the excitation of the…

Quantum Gases · Physics 2026-02-17 Leonardo Pisani

We discuss collective excitations (both fundamental and solitonic excitations) of quantized superfluid vortices in neutron $^3P_2$ superfluids, which likely exist in high density neutron matter such as neutron stars. Besides the well-known…

Nuclear Theory · Physics 2017-11-29 Chandrasekhar Chatterjee , Mareike Haberichter , Muneto Nitta

A brief review is given of the current state of the problem of neutrino pair emission through neutral weak currents caused by the Cooper pairs breaking and formation (PBF) in superfluid baryon matter at thermal equilibrium. The cases of…

Nuclear Theory · Physics 2018-05-14 Lev B. Leinson

We investigate the signatures of Fermi liquid formation in the N=4 super Yang-Mills theory coupled to fundamental hypermultiplet at nonvanishing chemical potential for the global U(1) vector symmetry. At strong 't Hooft coupling the system…

High Energy Physics - Theory · Physics 2008-11-26 Manuela Kulaxizi , Andrei Parnachev

We calculate the correlation functions needed to describe the linear response of superfluid matter, and go on to calculate the differential cross section for neutral-current neutrino scattering in superfluid neutron matter and in…

Nuclear Theory · Physics 2009-11-10 Joydip Kundu , Sanjay Reddy

We examine radial oscillations of superfluid neutron stars at finite internal temperatures. For this purpose we generalize the description of relativistic superfluid hydrodynamics to the case of superfluid mixtures. We show that in a…

Astrophysics · Physics 2008-11-26 M. E. Gusakov , N. Andersson

Superfluid properties of the inner crust matter of neutron stars, formed by nuclear clusters immersed in a dilute neutron gas, are analysed in a self- consistent HFB approach. The calculations are performed with two pairing forces, fixed so…

Nuclear Theory · Physics 2009-11-10 N. Sandulescu , Nguyen Van Giai , R. J. Liotta

The $^{1}S_{0}$ nucleonic superfluids are investigated within the relativistic mean-field model and Bardeen-Cooper-Schrieffer theory in hyperonic neutron stars. The $^{1}S_{0}$ pairing gaps of neutrons and protons are calculated based on…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Yan Xu , Cheng-Zhi Liu , Cun-Bo Fan , Xing-Wei Han , Xiao-Jun Zhang , Ming-Feng Zhu , Hong-Yan Wang , Guang-Zhou Liu

We study in a fully selfconsistent approach the structure of a vortex in low density superfluid neutron matter. We determine that the matter density profile of a vortex shows a significant depletion in the region of the core, a feature…

Nuclear Theory · Physics 2009-11-07 Yongle Yu , Aurel Bulgac

Superfluid condensates are known to occur in contexts ranging from laboratory liquid helium to neutron stars, and are also likely to occur in cosmological phenomena such as axion fields. In the zero temperature limit, such condensates are…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Brandon Carter

Addressing the feasibility of quantum communication with entangled electrons in an interacting many-body environment, we propose an interference experiment using a scattering set-up with an entangler and a beam splitter. It is shown that,…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Guido Burkard , Daniel Loss , Eugene V. Sukhorukov

The properties of low-density neutron matter are important for the understanding of neutron star crusts and the exterior of large neutron-rich nuclei. We examine various properties of dilute neutron matter using quantum Monte Carlo methods,…

Nuclear Theory · Physics 2010-05-07 Alexandros Gezerlis , J. Carlson

Neutrino flow is the dominant mechanism of energy transfer in the latest stages of supernovae explosions and in compact stars. The Standard Model of particle physics and accelerator data, provide a satisfactory description of neutrino…

Solar and Stellar Astrophysics · Physics 2012-12-27 Andrea Cipollone