NSR Query Results
Output year order : Descending NSR database version of March 21, 2024. Search: Author = A.Bulgac Found 53 matches. 2023BU03 Phys.Rev. C 107, 044318 (2023) A.Bulgac, M.Kafker, I.Abdurrahman Measures of complexity and entanglement in many-fermion systems NUCLEAR REACTIONS 235U(n, F), E = low; calculated time dependence of the entropy in the case of induced fission. Constrained self-consistent Hartree-Fock-Bogolyubov (HFB). NUCLEAR STRUCTURE 236U; calculated occupation numbers for induced fission. Hartree-Fock-Bogolyubov (HFB) and self-consistent superfluid local density approximation (SLDA) solution on the three dimensional spatial lattice for protons and neutrons.
doi: 10.1103/PhysRevC.107.044318
2023BU05 Phys.Rev. C 107, L061602 (2023) Entanglement entropy, single-particle occupation probabilities, and short-range correlations NUCLEAR REACTIONS 235U(n, F), E not given; calculated final proton and neutron canonical occupation probabilities, nonequilibrium time-evolution of the orbital entanglement entropy. Time-dependent density functional theory (DFT). Discussed the influence of presence of short-range correlations on the entanglement properties, the complexity of the many-body wave functions, the single-particle occupation probabilities, and the dynamics of many-body systems.
doi: 10.1103/PhysRevC.107.L061602
2023BU10 Phys.Rev. C 108, L051303 (2023) Examining the justification for the introduction of a fermion localization function
doi: 10.1103/PhysRevC.108.L051303
2023SC16 Phys.Rev. C 108, L061602 (2023) G.Scamps, I.Abdurrahman, M.Kafker, A.Bulgac, I.Stetcu Spatial orientation of the fission fragment intrinsic spins and their correlations
doi: 10.1103/PhysRevC.108.L061602
2022BU05 Phys.Rev.Lett. 128, 022501 (2022) A.Bulgac, I.Abdurrahman, K.Godbey, I.Stetcu Fragment Intrinsic Spins and Fragments' Relative Orbital Angular Momentum in Nuclear Fission NUCLEAR REACTIONS 235U, 239Pu(n, F), E not given; analyzed available data. 236U, 240Pu; calculated of the primary fission fragment intrinsic spins and of the fission fragments relative orbital angular momentum using the time-dependent density functional theory framework. RADIOACTIVITY 252Cf(SF); analyzed available data; calculated of the primary fission fragment intrinsic spins and of the fission fragments relative orbital angular momentum using the time-dependent density functional theory framework.
doi: 10.1103/PhysRevLett.128.022501
2022BU06 Phys.Rev. C 105, L021601 (2022) Pure quantum extension of the semiclassical Boltzmann-Uehling-Uhlenbeck equation NUCLEAR REACTIONS 238U(238U, F), E(cm)=1500 MeV;236U(236U, F), E not given; calculated time-dependent proton and neutron occupation probabilities. Time-dependent superfluid local density approximation with SeaLL1 EDF.
doi: 10.1103/PhysRevC.105.L021601
2022BU11 Phys.Rev. C 105, 044601 (2022) A.Bulgac, I.Abdurrahman, G.Wlazlowski Sensitivity of time-dependent density functional theory to initial conditions NUCLEAR REACTIONS 238U(238U, F), E(cm)=1200 MeV; time evolution of the neutron and proton number densities of fissioning system, temperature of the fission fragments. Time-dependent density-functional theory.
doi: 10.1103/PhysRevC.105.044601
2022BU19 Phys.Rev. C 106, 014624 (2022) Angular correlation between the fission fragment intrinsic spins RADIOACTIVITY 240Pu, 252Cf(SF); calculated fission fragment intrinsic spins, fission fragments relative orbital angular momentum. Showed the correlation between intrinsic spins of the fission fragments for a system with initial spin 0+. Time-dependent density functional theory (TDDFT).
doi: 10.1103/PhysRevC.106.014624
2021BU03 Phys.Rev.Lett. 126, 142502 (2021) A.Bulgac, I.Abdurrahman, S.Jin, K.Godbey, N.Schunck, I.Stetcu Fission Fragment Intrinsic Spins and Their Correlations RADIOACTIVITY 236U, 240Pu(SF); calculated fission fragment intrinsic spins and their correlations using two nuclear energy density functionals.
doi: 10.1103/PhysRevLett.126.142502
2021BU12 Phys.Rev. C 104, 054601 (2021) Restoring broken symmetries for nuclei and reaction fragments
doi: 10.1103/PhysRevC.104.054601
2021ST18 Phys.Rev.Lett. 127, 222502 (2021) I.Stetcu, A.E.Lovell, P.Talou, T.Kawano, S.Marin, S.A.Pozzi, A.Bulgac Angular Momentum Removal by Neutron and γ-Ray Emissions during Fission Fragment Decays NUCLEAR REACTIONS 235U, 239Pu(n, F), E thermal; 238U(n, F), E=1.9 MeV; analyzed available data; deduced the angular momentum removal from fission fragments through neutron and γ-ray emission, wide angular momentum removal distributions can hide any underlying correlations in the fission fragment initial spin values. RADIOACTIVITY 252Cf(SF); analyzed available data; deduced the angular momentum removal from fission fragments through neutron and γ-ray emission.
doi: 10.1103/PhysRevLett.127.222502
2020BA14 Acta Phys.Pol. B51, 605 (2020) M.C.Barton, S.Jin, P.Magierski, K.Sekizawa, G.Wlazlowski, A.Bulgac Pairing Dynamics in Low-Energy Nuclear Collisions
doi: 10.5506/APhysPolB.51.605
2020BU12 Phys.Rev. C 102, 034612 (2020) Pre-equilibrium neutron emission in fission or fragmentation
doi: 10.1103/PhysRevC.102.034612
2020BU16 Phys.Rev. C 102, 044609 (2020) Fission-fragment excitation energy sharing beyond scission NUCLEAR REACTIONS 235U, 240Pu(n, F), E not given; calculated intrinsic energies, TKE and dipole moments of fission fragments (FFs) as a function of separation between fission fragments using a simplified, classical and realistic model; deduced that FFs exchange up to several MeV of excitation energy after the cessation of nucleon exchange, and beyond scission.
doi: 10.1103/PhysRevC.102.044609
2019BU15 Phys.Rev. C 100, 014615 (2019) Unitary evolution with fluctuations and dissipation RADIOACTIVITY 258Fm(SF); calculated fission fragment mass yield distribution, total kinetic energy (TKE) distribution. 240Pu(SF); calculated fission trajectory in the quadrupole-octupole (Q20-Q30) plane. Quantum hydrodynamics equations using time dependent density functional theory with and without dissipation and fluctuation of collective degrees of freedom. Comparison with experimental data.
doi: 10.1103/PhysRevC.100.014615
2019BU19 Phys.Rev. C 100, 034612 (2019) Projection of good quantum numbers for reaction fragments
doi: 10.1103/PhysRevC.100.034612
2019BU20 Phys.Rev. C 100, 034615 (2019) A.Bulgac, S.Jin, K.J.Roche, N.Schunck, I.Stetcu Fission dynamics of 240Pu from saddle to scission and beyond NUCLEAR REACTIONS 239Pu(n, F), E=thermal, 2, 4, 5.5 MeV; calculated fission pathway for 240Pu along the mass quadrupole moment Q20 using SeaLL1, SkM*, and UNEDF1 energy density functionals (EDFs), contours of neutron and proton densities, magnitudes and phases of neutron and proton pairing fields, snapshots of the induced fission of 240Pu with enhanced pairing strength, fission trajectories using SeaLL1 and SkM* EDFs, initial excitation energy, TKE, neutron and proton numbers, excitation energies of the heavy and light fission fragments (FFs), total excitation energy of FFs, average saddle-to-scission times, internal temperatures for the light and heavy FFs, average neutron multiplicity emitted by FFs as a function of incident neutron energy, time evolution of quadrupole Q20 and octupole Q30 moments of the light and heavy FFs before and after scission, number of neutrons emitted predominantly after scission; deduced minor effect of pairing strength on the fission dynamics. Calculations based on time-dependent superfluid local density approximation (TDSLDA), with no limit on pairing . Comparison with experimental data for average neutron multiplicities.
doi: 10.1103/PhysRevC.100.034615
2018BU07 Phys.Rev. C 97, 044313 (2018) A.Bulgac, M.McNeil Forbes, Sh.Jin, R.Navarro-Perez, N.Schunck Minimal nuclear energy density functional ATOMIC MASSES Z=8-120, N=10-160, A=16-270; calculated ground-state energies, binding energies/nucleon, Coulomb, surface and symmetry energy/nucleon, contribution to the ground-state energies of the terms quartic in isospin density for 2375 nuclei, S(2n) and S(2p) for 606 even-even nuclei, and compared with AME-2012 data; calculated radii for 345 even-even nuclei. 48Ca, 208Pb; calculated proton and charge densities, and single particle energies for various orbitals. 240Pu; calculated potential energy surface, and fission pathway. N<300, Z<120; calculated proton and neutron driplines. Minimal nuclear energy density functional (NEDF) method called "SeaLL1". Comparison with other theoretical calculations.
doi: 10.1103/PhysRevC.97.044313
2018GR08 Acta Phys.Pol. B49, 591 (2018) J.Grineviciute, P.Magierski, A.Bulgac, S.Jin, I.Stetcu Accuracy of Fission Dynamics Within the Time-dependent Superfluid Local Density Approximation NUCLEAR STRUCTURE 240Pu; calculated fission time evolution (energy and quadrupole moment vs time) using Time-Dependent Superfluid Local Density Approximation (TDSLDA).
doi: 10.5506/aphyspolb.49.591
2017BU13 Phys.Rev.Lett. 119, 052501 (2017) Dynamics of Fragmented Condensates and Macroscopic Entanglement
doi: 10.1103/PhysRevLett.119.052501
2017JI01 Phys.Rev. C 95, 044302 (2017) S.Jin, A.Bulgac, K.Roche, G.Wlazlowski Coordinate-space solver for superfluid many-fermion systems with the shifted conjugate-orthogonal conjugate-gradient method NUCLEAR STRUCTURE 40Ca, 62Ni, 102Zr, 208Pb, 240Pu; calculated ground states and various densities such as particle number, spin, current, kinetic energy for a nuclear system, and saddle point constrained fission path for 240Pu; nuclei served as benchmarks for calculations using shifted conjugate orthogonal conjugate-gradient (COCG) Krylov method.
doi: 10.1103/PhysRevC.95.044302
2016BU04 Phys.Rev.Lett. 116, 122504 (2016) A.Bulgac, P.Magierski, K.J.Roche, I.Stetcu Induced Fission of 240Pu within a Real-Time Microscopic Framework RADIOACTIVITY 240Pu(SF) [from 239Pu(n, X)240Pu, E low]; calculated fissioning dynamics parameters, fission fragments properties, negligible role the collective inertia in the fully nonadiabatic treatment of nuclear dynamics, where all collective degrees of freedom (CDOF) are included.
doi: 10.1103/PhysRevLett.116.122504
2016WL01 Phys.Rev.Lett. 117, 232701 (2016) G.Wlazlowski, K.Sekizawa, P.Magierski, A.Bulgac, M.McNeil Forbes Vortex Pinning and Dynamics in the Neutron Star Crust
doi: 10.1103/PhysRevLett.117.232701
2015ST01 Phys.Rev.Lett. 114, 012701 (2015) I.Stetcu, C.A.Bertulani, A.Bulgac, P.Magierski, K.J.Roche Relativistic Coulomb Excitation within the Time Dependent Superfluid Local Density Approximation NUCLEAR REACTIONS 238U(238U, 238U'), E not given; calculated the total energy spectrum of emitted electromagnetic radiation, damping resonance width. Goldhaber-Teller model.
doi: 10.1103/PhysRevLett.114.012701
2014WL01 Phys.Rev.Lett. 113, 182503 (2014) G.Wlazlowski, J.W.Holt, S.Moroz, A.Bulgac, K.J.Roche Auxiliary-Field Quantum Monte Carlo Simulations of Neutron Matter in Chiral Effective Field Theory
doi: 10.1103/PhysRevLett.113.182503
2013BO19 Comput.Phys.Commun. 184, 085101 (2013) S.Bogner, A.Bulgac, J.Carlson, J.Engel, G.Fann, R.J.Furnstahl, S.Gandolfi, G.Hagen, M.Horoi, C.Johnson, M.Kortelainen, E.Lusk, P.Maris, H.Nam, P.Navratil, W.Nazarewicz, E.Ng, G.P.A.Nobre, E.Ormand, T.Papenbrock, J.Pei, S.C.Pieper, S.Quaglioni, K.J.Roche, J.Sarich, N.Schunck, M.Sosonkina, J.Terasaki, I.Thompson, J.P.Vary, S.M.Wild Computational nuclear quantum many-body problem: The UNEDF project NUCLEAR REACTIONS 3He(d, p), 7Be(p, γ), E<1MeV; 172Yb, 188Os, 238U(γ, X), E<24 MeV; calculated σ. Comparison with experimental data. NUCLEAR STRUCTURE 100Zr; calculated quadrupole deformation parameter, radii, neutron separation energy.
doi: 10.1016/j.cpc.2013.05.020
2013BU06 Phys.Rev. C 87, 051301 (2013) Use of the discrete variable representation basis in nuclear physics
doi: 10.1103/PhysRevC.87.051301
2011ST24 Phys.Rev. C 84, 051309 (2011) I.Stetcu, A.Bulgac, P.Magierski, K.J.Roche Isovector giant dipole resonance from the 3D time-dependent density functional theory for superfluid nuclei NUCLEAR REACTIONS 172Yb, 188Os, 238U(γ, n); calculated time-dependent proton and neutron occupation probabilities, photo-absorption cross sections for isovector giant dipole resonances. Fully symmetry-unrestricted time-dependent density functional theory for two Skyrme force parametrizations SkP and SLy4. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.051309
2008BA29 Phys.Rev. C 78, 014318 (2008) A.Baran, A.Bulgac, M.McNeil Forbes, G.Hagen, W.Nazarewicz, N.Schunck, M.V.Stoitsov Broyden's method in nuclear structure calculations
doi: 10.1103/PhysRevC.78.014318
2004BU06 Int.J.Mod.Phys. E13, 147 (2004) Superfluid LDA (SLDA): Local Density Approximation for systems with superfluid correlations
doi: 10.1142/S0218301304001874
2004MA51 Acta Phys.Pol. B35, 1203 (2004) Nuclear Hydrodynamics in the Inner Crust of Neutron Stars
2004MA55 Nucl.Phys. A738, 143 (2004) Nuclear structure and dynamics in the inner crust of neutron stars
doi: 10.1016/j.nuclphysa.2004.04.023
2003MA51 Nucl.Phys. A719, 217c (2003) P.Magierski, A.Bulgac, P.-H.Heenen Exotic nuclear phases in the inner crust of neutron stars in the light of Skyrme-Hartree-Fock theory
doi: 10.1016/S0375-9474(03)00921-7
2003YU01 Phys.Rev.Lett. 90, 161101 (2003) Spatial Structure of a Vortex in Low Density Neutron Matter
doi: 10.1103/PhysRevLett.90.161101
2003YU03 Phys.Rev.Lett. 90, 222501 (2003) Energy Density Functional Approach to Superfluid Nuclei NUCLEAR STRUCTURE Z=20-82; calculated one- and two-nucleon separation energies in semimagic nuclei. Energy density functional approach.
doi: 10.1103/PhysRevLett.90.222501
2002BU02 Phys.Rev.Lett. 88, 042504 (2002) Renormalization of the Hartree-Fock-Bogoliubov Equations in the Case of a Zero Range Pairing Interaction NUCLEAR STRUCTURE 110Sn; calculated neutron pairing field vs radial coordinate and cutoff energy. HFB equations, renormalization procedure for zero range pairing interaction.
doi: 10.1103/PhysRevLett.88.042504
2002BU14 Phys.Rev. C65, 051305 (2002) Local Density Approximation for Systems with Pairing Correlations
doi: 10.1103/PhysRevC.65.051305
2001BU10 Nucl.Phys. A683, 695 (2001); Erratum Nucl.Phys. A703, 892 (2002) Quantum Corrections to the Ground State Energy of Inhomogeneous Neutron Matter
doi: 10.1016/S0375-9474(00)00450-4
2001BU12 Acta Phys.Pol. B32, 1099 (2001) Shell Effects in Bubble Nuclei, Atomic Clusters, and Inhomogeneous Neutron Matter
2001BU25 Bull.Rus.Acad.Sci.Phys. 65, 141 (2001) Effect of Coulomb Correlations on the Single-Particle Spectrum of Atomic Nuclei
2001MA78 Acta Phys.Pol. B32, 2713 (2001) Selected Aspects of Physics of Fermionic Bubbles
2000YU01 Phys.Rev.Lett. 84, 412 (2000) Shell Correction Energy for Bubble Nuclei
doi: 10.1103/PhysRevLett.84.412
1999BU20 Eur.Phys.J. A 5, 247 (1999) Influence of Coulomb Correlations on the Location of Drip Line, Single Particle Spectra and Effective Mass
doi: 10.1007/s100500050282
1999BU34 Phys.Lett. 469B, 1 (1999) Proton Single-Particle Energy Shifts Due to Coulomb Correlations
doi: 10.1016/S0370-2693(99)01262-9
1997BE53 Phys.Rev.Lett. 79, 3539 (1997) Comment on ' Spontaneous Fission: A kinetic approach '
doi: 10.1103/PhysRevLett.79.3539
1997BU21 Phys.Rev. C56, 3307 (1997) A.Bulgac, G.A.Miller, M.Strikman Chiral Limit of Nuclear Physics
doi: 10.1103/PhysRevC.56.3307
1996BU20 Nucl.Phys. A601, 103 (1996) A Systematic Surface Contribution to the Ground-State Binding Energies NUCLEAR STRUCTURE 16O, 40Ca, 208Pb; calculated Coulomb exchange, correlation energy. 15,17O, 17F, 15N, 39,41Ca, 39K, 41Sc; calculated mirror nuclei Coulomb displacement energies; deduced weak perturbative interaction role.
doi: 10.1016/0375-9474(96)00094-2
1996BU34 Phys.Lett. 383B, 127 (1996) The Shape of the Fermi Surface
doi: 10.1016/0370-2693(96)00726-5
1995BU40 Pisma Zh.Eksp.Teor.Fiz. 62, 833 (1995); JETP Lett. 62, 843 (1995) A Systematic Contribution to the Binding Energy of Nuclei
1989BU15 Phys.Rev. C40, 1073 (1989) Configurational Quasidegeneracy and the Liquid Drop Model NUCLEAR STRUCTURE 16O, 40Ca; analyzed model calculations; deduced degeneracy features.
doi: 10.1103/PhysRevC.40.1073
1982BU19 Nuovo Cim. 70A, 142 (1982) A.Bulgac, S.Holan, F.Carstoiu, O.Dumitrescu Fermi-Liquid Model of Alpha-Decay RADIOACTIVITY 210Bi, 210Po, 202,206,210Rn, 208,210,212,214Ra; calculated α-decay width. Fermi liquid model, Pauli principle, new universal constant.
doi: 10.1007/BF02902943
1982BU26 Rev.Roum.Phys. 27, 331 (1982) A.Bulgac, F.Carstoiu, O.Dumitrescu Interionic Double Folding Yukawa Interaction Potential NUCLEAR REACTIONS 208Pb(16O, 16O), (116Sn, 116Sn), (α, α), 116Sn(66Zn, 66Zn), E not given; calculated nucleus-nucleus double folding potential characteristics. Semi-analytical form.
1981BU01 Nucl.Phys. A355, 321 (1981) A.Bulgac, M.B.Zhalov, L.A.Sliv, M.Ya.Amusia The Excitation of the Giant Resonances with Fast Protons NUCLEAR REACTIONS 40Ca, 56Ni(p, p'), E=1 GeV; calculated σ(Ep', θ); deduced giant resonance excitation characteristics. Glauber approach, RPA wave functions, Skyrme interaction.
doi: 10.1016/0375-9474(81)90530-3
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