Harmonic inversion of semiclassical short time signals

被引:20
作者
Grossmann, F
Mandelshtam, VA
Taylor, HS
Briggs, JS
机构
[1] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany
[2] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA
关键词
D O I
10.1016/S0009-2614(97)01055-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The resonance parameters of the collinear H + H-2 system, calculated recently by the Lorentzian fit of Fourier spectra of the semiclassical time correlation function C(t), are here extracted directly by harmonic inversion of C(t) using the filter-diagonalization technique. The new approach reveals more resonances from a much shorter segment of the same signal C(t). This reduces both the semiclassical error and the overall numerical effort. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:355 / 360
页数:6
相关论文
共 25 条
[1]   MOLECULAR-TRANSITION STATE, RESONANCES, AND PERIODIC-ORBIT THEORY [J].
BURGHARDT, I ;
GASPARD, P .
JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (09) :6395-6411
[2]   SEMICLASSICAL PROPAGATION - PHASE INDEXES AND THE INITIAL-VALUE FORMALISM [J].
CAMPOLIETI, G ;
BRUMER, P .
PHYSICAL REVIEW A, 1994, 50 (02) :997-1018
[3]   SOLUTION OF THE SCHRODINGER-EQUATION BY A SPECTRAL METHOD [J].
FEIT, MD ;
FLECK, JA ;
STEIGER, A .
JOURNAL OF COMPUTATIONAL PHYSICS, 1982, 47 (03) :412-433
[4]   Wave packet correlation function approach to H-2(upsilon)+H->H+H-2(upsilon'): Semiclassical implementation [J].
Garashchuk, S ;
Tannor, D .
CHEMICAL PHYSICS LETTERS, 1996, 262 (3-4) :477-485
[5]   SYMPLECTIC INTEGRATORS FOR LARGE-SCALE MOLECULAR-DYNAMICS SIMULATIONS - A COMPARISON OF SEVERAL EXPLICIT METHODS [J].
GRAY, SK ;
NOID, DW ;
SUMPTER, BG .
JOURNAL OF CHEMICAL PHYSICS, 1994, 101 (05) :4062-4072
[6]   Time-dependent semiclassical calculation of resonance lifetimes [J].
Grossmann, F .
CHEMICAL PHYSICS LETTERS, 1996, 262 (3-4) :470-476
[7]   PHASE-INTEGRAL APPROXIMATION IN MOMENTUM SPACE AND BOUND STATES OF AN ATOM [J].
GUTZWILLER, MC .
JOURNAL OF MATHEMATICAL PHYSICS, 1967, 8 (10) :1979-+
[8]   A SEMICLASSICAL JUSTIFICATION FOR THE USE OF NON-SPREADING WAVEPACKETS IN DYNAMICS CALCULATIONS [J].
HERMAN, MF ;
KLUK, E .
CHEMICAL PHYSICS, 1984, 91 (01) :27-34
[9]   NUMERICAL STUDY OF SEMICLASSICAL INITIAL-VALUE METHODS FOR DYNAMICS [J].
KAY, KG .
JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (06) :4432-4445
[10]   INTEGRAL EXPRESSIONS FOR THE SEMICLASSICAL TIME-DEPENDENT PROPAGATOR [J].
KAY, KG .
JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (06) :4377-4392