000124129 1879-1955 1926- actiontheory albert amigosycompañeros biografía biography biophysics biothermodynamics brown champsdejauge(physique) congresses cosmology dataprocessing einstein electromagnetictheory friendsandassociates friendsandassociateseinstein físicos gaugefields(physics) gravitation kaluza-kleintheories life many-bodyproblem origin physicists physics quantumtheory relatividad(física) relativity(physics) supergravity superstringtheories supersymmetry teoríasdelcampounificado thermodynamics théoriesduchampunitaire