Particle-number-conserving theory for nuclear pairing

The rotational bands in the neutron-rich nuclei 153−157 Pm are investigated by a particle-number conserving method. The kinematic moments of inertia for the 1-quasiparticle bands in odd-A Pm isotopes 153,155,157 Pm are reproduced quite well by the present calculation. By comparison between the experimental and calculated moments of inertia for the three 2-quasiparticle bands in the oddodd nuclei 154,156 Pm, their configurations and bandhead spins have been assigned properly. For the 2-quasiparticle band in 154 Pm, the configuration is assigned as π5/2 − [532] ⊗ ν3/2 − [521] (K π = 4 + ) with the bandhead spin I0 = 4 . In 156 Pm, the same configuration and bandhead spin assignments have been made for the 2-quasiparticle band with lower excitation energy. The configuration π5/2 + [413] ⊗ ν5/2 + [642] (K π = 5 + ) with the bandhead spin I0 = 5 is assigned for that with higher excitation energy.

show abstract

“…Similar exact particle-number conserving approaches can be found in Refs. [33][34][35][36][37][38]. This paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Configuration and bandhead spin assignments for the two-quasiparticle rotational bands in the neutron-rich nuclei Pm154,156

2019

View full text Add to dashboard Cite

show abstract

“…Similar approaches with exactly conserved particle number when treating the paring correlations can be found in Refs. [70,71,72,73,74,75]. This paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Band crossings in 168Ta: A particle-number conserving analysis

Zhang¹,

Huang²

2019

Nuclear Physics A

View full text Add to dashboard Cite

The structures of two observed high-spin rotational bands in the doubly-odd nucleus 168 Ta are investigated using the cranked shell model with pairing correlations treated by a particle-number conserving method, in which the blocking effects are taken into account exactly. The experimental moments of inertia and alignments are reproduced very well by the calculations, which confirms the configuration assignments for these two bands in previous works. The backbending and upbending mechanisms in these two bands are analyzed in detail by calculating the occupation probabilities of each orbital close to the Fermi surface and the contributions of each orbital to the total angular momentum alignments. The investigation shows that the level crossings in the first backbending is the neutron i 13/2 crossing and the in second upbending is the proton h 11/2 crossing.

show abstract

“…One of the most successful theoretical and phenomenological approaches to date for understanding the properties of heavy-ion collisions involves numerically simulating the various stages of their evolution on an event-byevent basis, and using these simulations to make predictions which can be compared with experimental measurements of event-by-event heavy-ion observables. In particular, a great deal of attention has been paid in this regard to event-by-event fluctuations of observables related to radial flow ( p T ) [5,6], anisotropic flow (v n ) [7][8][9], total multiplicity (N ch ) [10][11][12], and so on. To extend the successes of this event-by-event hydrodynamic paradigm to include the HBT radii, then, clearly requires the ability to simulate HBT analyses on an event-by-event basis.…”

Section: Introductionmentioning

confidence: 99%

“…For the results presented in this paper, we take σ k = 10 −3 for all k. 8 This means that deviations of the fit from the data points in the small-q region (where the correlation function C( q (k) , K) is the largest) will make larger contributions to the total χ 2 of the fit than points in the large-q region (with the exception that we omit the point q = 0 from the fit, since it is not experimentally accessible, and its omission has a negligible effect on the fit radii). Our approach here differs from that adopted in most experimental analyses, which fit the quantity ln C( q (k) , K) − 1 instead of C( q (k) , K).…”

mentioning

confidence: 99%

Hanbury-Brown–Twiss correlation functions and radii from event-by-event hydrodynamics

Plumberg

Heinz

2018

Phys. Rev. C

View full text Add to dashboard Cite

HoTCoffeeh (Hanbury Brown-Twiss Correlation f unctions and radii f rom event-by-event hydrodynamics) is a new computational tool which determines Hanbury Brown-Twiss (HBT) charged pion (π + ) correlation functions and radii for event-by-event (EBE) hydrodynamics with fluctuating initial conditions in terms of Cooper-Frye integrals, including resonance decay contributions. In this paper, we review the basic formalism for computing the HBT correlation functions and radii with resonance decay contributions included, and discuss our implementation of this formalism in the form of HoTCoffeeh. This tool may be easily integrated with other numerical packages (e.g., [1]) for the purpose of simulating the evolution of heavy-ion collisions and thereby extracting predictions for heavy-ion observables.

show abstract

Particle-number-conserving theory for nuclear pairing

Cited by 29 publications

References 27 publications

Configuration and bandhead spin assignments for the two-quasiparticle rotational bands in the neutron-rich nuclei Pm154,156

Configuration and bandhead spin assignments for the two-quasiparticle rotational bands in the neutron-rich nuclei Pm154,156

Band crossings in 168Ta: A particle-number conserving analysis

Hanbury-Brown–Twiss correlation functions and radii from event-by-event hydrodynamics

Contact Info

Product

Resources

About