Perturbative and nonperturbative aspects of quantum field theory and relativistic ...
Quantum cosmology on Horava-Lifshitz theory of gravitation and other aspects of qu...
| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Inst Nacl Pesquisas Espaciais, Div Astrofis, Ave Astronautas 1758, BR-12227010 Sao Jose Dos Campos, SP - Brazil
[2] Minist Educ Brazil, CAPES Fdn, Brasilia, DF - Brazil
[3] Towson Univ, Dept Phys Astron & Geosci, 8000 York Rd, Towson, MD 21252 - USA
Total Affiliations: 3
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| Document type: | Journal article |
| Source: | ASTROPHYSICAL JOURNAL; v. 823, n. 2 JUN 1 2016. |
| Web of Science Citations: | 12 |
| Abstract | |
We first revisit the energy loss mechanism known as quantum vacuum friction (QVF), clarifying some of its subtleties. Then we investigate the observables that could easily differentiate QVF from the classical magnetic dipole radiation for pulsars with accurately measured braking indices (n). We show that this is particularly the case for the time evolution of a pulsar's magnetic dipole direction ((phi) over dot) and surface magnetic field ((B) over dot(0)). As is well known in the context of the classic magnetic dipole radiation, n < 3 would only be possible for positive ((B) over dot(0)/B-0+(phi) over dot/tan phi ), which, for instance, leads to (B) over dot > 0 ((phi) over dot > 0) when phi (B-0) is constant. On the other hand, we show that QVF can result in very different predictions with respect to those above. Finally, even if (B) over dot(0) has the same sign in both of the aforementioned models for a pulsar, then, for a given f, we show that they give rise to different associated timescales, which could be another way to falsify QVF. (AU) | |
| FAPESP's process: | 13/26258-4 - Superdense matter in the universe |
| Grantee: | Manuel Máximo Bastos Malheiro de Oliveira |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/15088-0 - Magnetars and the highly magnetized, fast, very massive, strange white dwarfs pulsars, and the generation of gravitational waves |
| Grantee: | Jaziel Goulart Coelho |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |