Flat-top oscillons in an expanding universe
Pourquoi ce travail est-il dans la base ?
Une base qui oublie comment elle a trouvé un travail ne peut pas être vérifiée. Voici les voies qui ont admis celui-ci.
Aucune affiliation canadienne. Une base fondée sur la seule affiliation (le devis habituel) n'aurait jamais vu ce travail. C'est l'un des travaux qui justifient l'inversion de la base.
Le tri à trois modèles
les 1 000 travaux triés →Les trois modèles l'ont jugé hors champ.
Theoretical cosmology of oscillon field configurations.
It studies cosmological field configurations, not research itself.
Theoretical cosmology of oscillon field configurations in an expanding universe; pure physics.
Résumé
Oscillons are extremely long lived, oscillatory, spatially localized field configurations that arise from generic initial conditions in a large number of nonlinear field theories. With an eye towards their cosmological implications, we investigate their properties in an expanding universe. We (1) provide an analytic solution for one-dimensional oscillons (for the models under consideration) and discuss their generalization to three dimensions, (2) discuss their stability against long wavelength perturbations, and (3) estimate the effects of expansion on their shapes and lifetimes. In particular, we discuss a new, extended class of oscillons with surprisingly flat tops. We show that these flat-topped oscillons are more robust against collapse instabilities in ($3+1$) dimensions than their usual counterparts. Unlike the solutions found in the small amplitude analysis, the width of these configurations is a nonmonotonic function of their amplitudes.
Conservé avec la notice de tri, où il sert de preuve aux étiquettes ci-dessus.
La notice
- Revue
- Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology
- Thématique
- Cosmology and Gravitation Theories
- Domaine
- Physics and Astronomy
- Établissements canadiens
- —
- Organismes subventionnaires
- Natural Sciences and Engineering Research Council of Canada
- Mots-clés
- PhysicsAmplitudeGeneralizationUniverseField (mathematics)Metric expansion of spaceTheoretical physicsNonlinear systemStability (learning theory)Classical mechanicsClass (philosophy)Function (biology)Mathematical analysisCosmologyPure mathematicsAstrophysicsMathematicsQuantum mechanicsComputer scienceDark energyArtificial intelligence
- Résumé présent dans OpenAlex
- oui