کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10725233 1034103 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Accelerating universe in two-dimensional noncommutative dilaton cosmology
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Accelerating universe in two-dimensional noncommutative dilaton cosmology
چکیده انگلیسی
We show that the phase transition from the decelerating universe to the accelerating universe, which is of relevance to the cosmological coincidence problem, is possible in the semiclassically quantized two-dimensional dilaton gravity by taking into account the noncommutative field variables during the finite time. Initially, the quantum-mechanically induced energy from the noncommutativity among the fields makes the early universe decelerate and subsequently the universe is accelerating because the dilaton driven cosmology becomes dominant later.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 645, Issue 1, 1 February 2007, Pages 82-87
نویسندگان
, ,