Vortex excitation in superfluid He-4: A diffusion Monte Carlo study

被引：21

作者：

Giorgini, S

Boronat, J

Casulleras, J

机构：

[1] IST NAZL FIS MAT,I-38050 POVO,ITALY

[2] UNIV POLITECN CATALUNYA,DEPT FIS & ENGN NUCL,E-08028 BARCELONA,SPAIN

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.77.2754

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a diffusion Monte Carlo study of a single vortex in two-dimensional superfluid liquid He-4 within the fixed-node approximation. We use both the Feynman phase and an improved phase which includes backflow correlations to model the nodal surface of the vortex wave function. Results for the particle density, core radius, and excitation energies are presented.

引用

页码：2754 / 2757

页数：4

共 16 条

[11]

Onsager L., 1949, NUOVO CIM, V6, P249

[12] CORE STRUCTURE OF A VORTEX IN SUPERFLUID HE-4 [J].

ORTIZ, G ;

CEPERLEY, DM .

PHYSICAL REVIEW LETTERS, 1995, 75 (25) :4642-4645

[13]

PITAEVSKII LP, 1961, ZH EKSP TEOR FIZ, V13, P451

[14] FIXED-NODE QUANTUM MONTE-CARLO FOR MOLECULES [J].

REYNOLDS, PJ ;

CEPERLEY, DM ;

ALDER, BJ ;

LESTER, WA .

JOURNAL OF CHEMICAL PHYSICS, 1982, 77 (11) :5593-5603

[15] MANY-BODY STRUCTURE OF QUANTUM VORTICES IN THIN HE-4 FILMS [J].

SAARELA, M ;

KUSMARTSEV, FV .

PHYSICS LETTERS A, 1995, 202 (04) :317-323

[16]

VITIELLO SA, IN PRESS

← 1 2 →