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Title: Gravitational properties of antimatter

Abstract

Quantum gravity is at the forefront of modern particle physics, yet there are no direct tests, for antimatter, of even the principle of equivalence. We note that modern descriptions of gravity, such as fibre bundles and higher dimensional spacetimes, allow violations of the commonly stated form of the principle of equivalence, and of CPT. We review both indirect arguments and experimental tests of the expected gravitational properties of CPT-conjugate states. We conclude that a direct experimental test of the gravitational properties of antimatter, at the 1% (or better) level, would be of great value. We identify some experimental reasons which make the antiproton a prime candidate for this test, and we strongly urge that such an experiment be done at LEAR. 21 references.

Authors:
;
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
OSTI Identifier:
5885956
Report Number(s):
LA-UR-85-1092; CONF-850152-2
ON: DE85009601
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: 3. LEAR workshop, Tignes-Savoie, France, 19 Jan 1985
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTIMATTER; GRAVITATIONAL INTERACTIONS; LEAR; EXPERIMENT PLANNING; QUANTUM GRAVITY; ANTIPROTONS; CPT THEOREM; GRAND UNIFIED THEORY; QUANTUM CHROMODYNAMICS; ANTIBARYONS; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; BASIC INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; INTERACTIONS; INVARIANCE PRINCIPLES; MATHEMATICAL MODELS; NUCLEI; PARTICLE MODELS; PLANNING; QUANTUM FIELD THEORY; STORAGE RINGS; UNIFIED GAUGE MODELS; UNIFIED-FIELD THEORIES; 645400* - High Energy Physics- Field Theory; 657003 - Theoretical & Mathematical Physics- Relativity & Gravitation

Citation Formats

Goldman, T, and Nieto, M M. Gravitational properties of antimatter. United States: N. p., 1985. Web.
Goldman, T, & Nieto, M M. Gravitational properties of antimatter. United States.
Goldman, T, and Nieto, M M. 1985. "Gravitational properties of antimatter". United States. https://www.osti.gov/servlets/purl/5885956.
@article{osti_5885956,
title = {Gravitational properties of antimatter},
author = {Goldman, T and Nieto, M M},
abstractNote = {Quantum gravity is at the forefront of modern particle physics, yet there are no direct tests, for antimatter, of even the principle of equivalence. We note that modern descriptions of gravity, such as fibre bundles and higher dimensional spacetimes, allow violations of the commonly stated form of the principle of equivalence, and of CPT. We review both indirect arguments and experimental tests of the expected gravitational properties of CPT-conjugate states. We conclude that a direct experimental test of the gravitational properties of antimatter, at the 1% (or better) level, would be of great value. We identify some experimental reasons which make the antiproton a prime candidate for this test, and we strongly urge that such an experiment be done at LEAR. 21 references.},
doi = {},
url = {https://www.osti.gov/biblio/5885956}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}

Conference:
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