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A shape phase transition between stable octupole deformation and octupole vibrations in Th nuclei is analyzed in a microscopic framework based on nuclear density functional theory. The relativistic functional DD-PC1 is used to calculate…

核理论 · 物理学 2014-02-04 K. Nomura , D. Vretenar , B. -N. Lu

Experimental data on $^{96}$Zr indicate coexisting spherical and deformed structures with small mixing amplitudes. Several collective low-lying states and E2 and M1 transitions are observed for this nucleus. The quadrupole-collective Bohr…

核理论 · 物理学 2020-09-16 E. V. Mardyban , E. A. Kolganova , T. M. Shneidman , R. V. Jolos , N. Pietralla

The possibility has been suggested that high-frequency quasi-periodic oscillations observed in low-mass X-ray binaries are resonantly excited disk oscillations in deformed (warped or eccentric) relativistic disks (Kato 2004). In this paper…

高能天体物理现象 · 物理学 2015-05-27 Shoji Kato , Atsuo T. Okazaki , Finny Oktariani

We propose a new way of analyzing, and analytically representing, the ringdown part of the gravitational wave signal emitted by coalescing black hole binaries.By contrast with the usual {\it linear} decomposition of the multipolar complex…

广义相对论与量子宇宙学 · 物理学 2015-06-19 Thibault Damour , Alessandro Nagar

We consider a new class of model systems to study systematically the role of molecular shape in the transport properties of dense liquids. Our model is a liquid binary mixture where both the molecules are non-spherical and characterized by…

计算物理 · 物理学 2018-09-18 Sarmistha Sarkar , Tuhin Samanta , Biman Bagchi

Quasi-one-dimensional solitons that may occur in an elongated Bose-Einstein condensate become unstable at high particle density. We study two basic modes of instability and the corresponding bifurcations to genuinely three-dimensional…

凝聚态物理 · 物理学 2007-05-23 S. Komineas , N. Papanicolaou

In the sequel of the present study, we have investigated the rotational motion of triaxially deformed nucleus by using the microscopic framework of angular-momentum projection. The Woods-Saxon potential and the schematic separable-type…

核理论 · 物理学 2018-02-21 Mitsuhiro Shimada , Yudai Fujioka , Shingo Tagami , Yoshifumi R. Shimizu

Collective longitudinal and transverse propagating modes in molten Carbon at $T=5500$~K and pressure range $10$-$40$ GPa are reported from {\it ab initio} based as well as machine learned molecular dynamics. A striking exotic feature in…

统计力学 · 物理学 2025-09-03 Taras Bryk , Giancarlo Ruocco , Jean-François Wax , Noël Jakse

The present work reports about the dynamics of a collection of randomly distributed, and randomly oriented, oscillators in 3D space, coupled by an interaction potential falling as $1/r^3$, where r stands for the inter-particle distance.…

无序系统与神经网络 · 物理学 2017-11-22 Simona Olmi , Matteo Gori , Irene Donato , Marco Pettini

{\bf Background:} Level sequences of rotational character have been observed in several nuclei in the $A=60$ mass region. The importance of the deformation-driving $\pi f_{7/2}$ and $\nu g_{9/2}$ orbitals on the onset of nuclear deformation…

Recent experiments have revealed the profound effect of strong light-matter interactions in optical cavities on the electronic ground state of molecular systems. This phenomenon, known as vibrational strong coupling (VSC), can modify…

量子物理 · 物理学 2023-12-19 Thomas Schnappinger , Markus Kowalewski

We studied the rotational spectrum of oxirane in a sample of natural isotopic composition in selected regions between 158 GHz and 1093 GHz. Investigations of the isotopologs with one $^{13}$C or one $^{18}$O were the primary focus in order…

化学物理 · 物理学 2022-02-17 Holger S. P. Müller , Jean-Claude Guillemin , Frank Lewen , Stephan Schlemmer

Collective inertial mass coefficients with respect to translational, relative, and rotational motions are microscopically calculated, along the collective reaction path self-consistently determined, based on the adiabatic self-consistent…

核理论 · 物理学 2022-03-14 Kai Wen , Takashi Nakatsukasa

Collective modes are coherent excitations in Bose-Einstein condensates (BECs), and their study provides insight into the macroscopic quantum phenomena that govern these systems. Collective mode frequencies can be used to probe the…

量子气体 · 物理学 2025-04-10 Leandro A. Machado , Lucas Madeira , Mônica A. Caracanhas , Vanderlei S. Bagnato

We study the collective modes of a binary Bose mixture across the soliton to droplet crossover in a quasi one dimensional waveguide with a beyond-mean-field equation of state and a variational Gaussian ansatz for the scalar bosonic field of…

量子气体 · 物理学 2018-05-31 Alberto Cappellaro , Tommaso Macrì , Luca Salasnich

The evolution of atomic solitary waves in Bose-Einstein condensate (BEC) under adiabatic changes of the atomic scattering length is investigated. The variations of amplitude, width, and velocity of soliton are found for both spatial and…

凝聚态物理 · 物理学 2009-11-10 F. Kh. Abdullaev , Mario Salerno

Dirac coupled channel calculations are performed phenomenologically for the high-lying excited states that belong to the 2$^+$ gamma vibrational band at the 800-MeV polarized proton inelastic scatterings from the s-d shell nuclei, $^{24}$Mg…

核理论 · 物理学 2017-04-26 Sugie Shim

Structural evolution in neutron-rich Os and W isotopes is investigated in terms of the Interacting Boson Model (IBM) Hamiltonian determined by (constrained) Hartree-Fock-Bogoliubov (HFB) calculations with the Gogny-D1S Energy Density…

A recently developed efficient recursive approach for analytically calculating the short-time evolution of the one-particle propagator to extremely high orders is applied here for numerically studying the thermodynamical and dynamical…

量子气体 · 物理学 2010-03-10 Antun Balaz , Ivana Vidanovic , Aleksandar Bogojevic , Axel Pelster

We present systematic calculations on the spectroscopy and transition properties of even-even Te isotopes by using the large-scale configuration interaction shell model approach with a realistic interaction. These nuclei are of particular…

核理论 · 物理学 2016-09-09 Chong Qi