인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Abstract In this paper, we will propose a novel interacting vacuum model whose energy flow is modeled according to the free Dirac–Born–Infeld theory and hydrodynamically realized via the (Modified) Berthelot equation of state. By employing dynamical system techniques, we will identify a suitable late-time attractor which can realistically account for the present-day configuration of the universe, addressing the coincidence problem, supporting an accelerated expansion without breaking any energy condition, free from fine-tuning issues on initial conditions, and stable also at the perturbative level. Analytical closed-form results for the redshift evolution of both vacuum energy and dark matter will be presented. We will provide as well two distinctive fingerprints of our model, useful for its sharp identification inside the rich zoo of literature interacting vacuum models: a vacuum equation of state via geometric curvature scalars, and an analytical relationship between the statefinder variables. We will eventually show that our scenario actually consists in a running (or decaying) vacuum, with consequent production of dark matter particles, also comparing and contrasting its cosmological applicability with that of other known interacting vacuum paradigms. Our work therefore belongs to the line of research scrutinizing the relevance of quantum field theory approaches to the taming of current observational tensions.
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오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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