Super-Chandrasekhar Limiting mass white dwarfs as emergent phenomena of noncommutative squashed fuzzy spheres. (English) Zbl 1490.83065
Summary: The indirect evidence for at least a dozen massive white dwarfs (WDs) violating the Chandrasekhar mass limit is considered to be one of the wonderful discoveries in astronomy for more than a decade. Researchers have already proposed a diverse amount of models to explain this astounding phenomenon. However, each of these models always carries some drawbacks. On the other hand, noncommutative geometry is one of the best replicas of quantum gravity, which is yet to be proved from observations. Madore introduced the idea of a fuzzy sphere to describe a formalism of noncommutative geometry. This paper shows that the idea of a squashed fuzzy sphere can self-consistently explain the super-Chandrasekhar limiting mass WDs. We further show that the length scale beyond which the noncommutativity is prominent is an emergent phenomenon, and there is no prerequisite for an ad hoc length scale.
MSC:
| 83C65 | Methods of noncommutative geometry in general relativity |
| 85A15 | Galactic and stellar structure |
| 85A25 | Radiative transfer in astronomy and astrophysics |
| 83C47 | Methods of quantum field theory in general relativity and gravitational theory |
| 81V70 | Many-body theory; quantum Hall effect |
| 83C45 | Quantization of the gravitational field |
| 03E72 | Theory of fuzzy sets, etc. |
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