Inflation is the most commonly accepted theory in cosmology to explain why the universe appears flat, homogeneous, and isotropic, as well as the origin of the large-scale structure of the cosmos and why no magnetic mo...Inflation is the most commonly accepted theory in cosmology to explain why the universe appears flat, homogeneous, and isotropic, as well as the origin of the large-scale structure of the cosmos and why no magnetic monopoles have been detected. However, so far, the origin of the inflation epoch and what is the hypothetical field, the inflation, giving rise to inflation, remains unknown. String theory is one of the promising candidates for the grand unification theory. Grand unification theory is to use one mathematic formula to describe everything. In this work, we study the inflation scheme in a new development in string theory, UWFIST （universal wave function interpretation of string theory）. We show that from UWFIST we can derive from the fundamental theory that the long-range vibration is the possible candidate of inflation. We estimate the vacuum energy created by the long-range vibration and show that it can indeed drive the inflation.展开更多
Under classical mechanics,the general equation of particle motion in the periodic field is derived.In the dampless case,the existence possibility of the higher-order harmonic radiation is explored by using Bessel func...Under classical mechanics,the general equation of particle motion in the periodic field is derived.In the dampless case,the existence possibility of the higher-order harmonic radiation is explored by using Bessel function expansion of a generalized trigonometrical function and the multi-scale method.In the damping case,the critical properties and a chaotic behavior are discussed by the Melnikov method.The results show that the use of a higher-order harmonic radiation of non-relativistic particles as a short-wavelength laser source is perfectly possible,and the system critical condition is related to its parameters.only by adjusting parameters suitablely,the stable higher-order harmonic radiation with bigger intensity can be obtained.展开更多
文摘Inflation is the most commonly accepted theory in cosmology to explain why the universe appears flat, homogeneous, and isotropic, as well as the origin of the large-scale structure of the cosmos and why no magnetic monopoles have been detected. However, so far, the origin of the inflation epoch and what is the hypothetical field, the inflation, giving rise to inflation, remains unknown. String theory is one of the promising candidates for the grand unification theory. Grand unification theory is to use one mathematic formula to describe everything. In this work, we study the inflation scheme in a new development in string theory, UWFIST （universal wave function interpretation of string theory）. We show that from UWFIST we can derive from the fundamental theory that the long-range vibration is the possible candidate of inflation. We estimate the vacuum energy created by the long-range vibration and show that it can indeed drive the inflation.
基金supported by the National Natural Science Foundation of China (No.10947140)the Natural Science Foundation of Guangdong Province (No.10451170003004948)the Dongguan Science and Technology Program (No.2008108101002)
文摘Under classical mechanics,the general equation of particle motion in the periodic field is derived.In the dampless case,the existence possibility of the higher-order harmonic radiation is explored by using Bessel function expansion of a generalized trigonometrical function and the multi-scale method.In the damping case,the critical properties and a chaotic behavior are discussed by the Melnikov method.The results show that the use of a higher-order harmonic radiation of non-relativistic particles as a short-wavelength laser source is perfectly possible,and the system critical condition is related to its parameters.only by adjusting parameters suitablely,the stable higher-order harmonic radiation with bigger intensity can be obtained.
