A Cyclic Model of the Universe | Zendy

Paul J. Steinhardt | Zendy; Neil Turok | Zendy

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A Cyclic Model of the Universe

Author(s) -

Paul J. Steinhardt,

Neil Turok

Publication year - 2002

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.1070462

Subject(s) - big crunch , physics , ultimate fate of the universe , cosmic cancer database , metric expansion of space , cosmology , universe , homogeneity (statistics) , astrophysics , flatness (cosmology) , inflationary epoch , theoretical physics , de sitter universe , dark energy , physical cosmology , steady state theory , mathematics , statistics

We propose a cosmological model in which the universe undergoes an endless sequence of cosmic epochs that begin with a "bang" and end in a "crunch." Temperature and density at the transition remain finite. Instead of having an inflationary epoch, each cycle includes a period of slow accelerated expansion (as recently observed) followed by contraction that produces the homogeneity, flatness, and energy needed to begin the next cycle.

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