Orderly Spectra from Random Interactions

Journal Article · Sun Mar 01 00:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.2749· OSTI ID:659275

Johnson, C W ^[1]; Bertsch, G F ^[2]; Dean, D J; Dean, D J ^[3]

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1. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001 (United States)
2. Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States)
3. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)

We investigate the low-lying spectra of many-body systems with random two-body interactions, specifying that the ensemble be invariant under particle-hole conjugation. Surprisingly we find patterns reminiscent of more orderly interactions, such as a predominance of J=0 ground states separated by a gap from the excited states, and evidence of phonon vibrations in the low-lying spectra. {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-96OR22464; FG02-96ER40963; FG02-96ER40985; FG06-90ER40561
• OSTI ID: 659275
• Journal Information: Physical Review Letters, Vol. 80, Issue 13; Other Information: PBD: Mar 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
RANDOMNESS
MANY-BODY PROBLEM
SPECTRA
GROUND STATES
EXCITED STATES
PHONONS
VIBRATIONAL STATES
ROTATIONAL INVARIANCE
ANGULAR MOMENTUM