机构:
Univ Paris 11, Phys Theor & Hautes Energies Lab, CNRS, URA D0063, Bat 211, F-91405 Orsay, FranceUniv Paris 11, Phys Theor & Hautes Energies Lab, CNRS, URA D0063, Bat 211, F-91405 Orsay, France
Madore, J
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机构:
[1] Univ Paris 11, Phys Theor & Hautes Energies Lab, CNRS, URA D0063, Bat 211, F-91405 Orsay, France
[2] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
In previous articles it has been argued that a differential calculus over a noncommutative algebra uniquely determines a gravitational field in the commutative limit and that there is a unique metric which remains as a classical "shadow". Some examples were given of metrics which resulted from a given algebra and given differential calculus. Here we aboard the inverse problem, that of constructing the algebra and the differential calculus from the classical metric.
机构:
CAPES Fdn, Minist Educ Brazil, Brasilia, DF, Brazil
Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, ItalyCAPES Fdn, Minist Educ Brazil, Brasilia, DF, Brazil