Chaotic coupling constants
نویسندگان
چکیده
منابع مشابه
Chaotic Coupling Constants
We examine some novel physical consequences of the general structure of moduli spaces of string vacua. These include (1) finiteness of the volume of the moduli space and (2) chaotic motion of the moduli in the early universe. To fix ideas we examine in detail the example of the (conjectural) dilaton-axion “S-duality” of four-dimensional string compactifications. The facts (1) and (2) together m...
متن کاملHyperfine Coupling Constants
The IH hyperfine coupling constants of free radicals and ions have been successfully studied by our newly modified s-p· separation type INDO-MO method->, and the most of our calculated coupling constants are significantly better than the corresponding results of the conventional INDO-MO method."" The nuclear hyperfine coupling constant is assumed to be directly proportional to the 2s spin densi...
متن کاملDynamical Gauge Coupling Constants
In string theory the coupling parameters are functions of moduli fields. The actual values of the coupling constants are then dynamically determined through the vacuum expextation values of these fields. We review the attempts to connect such theories to low energy effective field theories with realistic gauge coupling constants. This includes a discussion of supersymmetry breakdown, the questi...
متن کاملJHH Spin-Spin Coupling Constants
Some calculations of the electric field derivative of the spin-spin coupling constant on molecules in the series CH3F, CH3Cl, CH3Br, CH3I, CH4, CH3Li, CH3Na and CH3K have been presented. The data is broken down into the 4 terms of the Ramsey theory: Fermi contact (FC); diamagnetic spin-orbit (DSO); paramagnetic spinorbit (PSO) and spin-dipolar (SD). The FC term is seen to dominate all the calcu...
متن کاملDark energy, chaotic fields, and fundamental constants
To explain the currently observed accelerated expansion of the universe, a large number of different theoretical models are presently being discussed. In one way or another, all of these contain ‘new physics’, though at different levels. The big question is how to select out of infinitely many possible models the right one. We here discuss a possibility that has so far been somewhat neglected, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1994
ISSN: 0550-3213
DOI: 10.1016/0550-3213(94)90595-9