Substitution Hamiltonians with Bounded Trace Map Orbits
نویسندگان
چکیده
منابع مشابه
Trace Substitution
Trace caches deliver a high number of instructions per cycle to wide-issue superscalar processors. To overcome complex control flow, multiple branch predictors have to predict up to 3 conditional branches per cycle. These multiple branch predictors sometimes predict completely wrong paths of execution, degrading the average fetch bandwidth. This paper shows that such mispredictions can be detec...
متن کاملReparametrizations of non trace-normed Hamiltonians
We consider a Hamiltonian system of the form y′(x) = JH(x)y(x), with a locally integrable and nonnegative 2×2-matrix valued Hamiltonian H(x). In the literature dealing with the operator theory of such equations, it is often required in addition that the Hamiltonian H is trace–normed, i.e. satisfies tr H(x) ≡ 1. However, in many examples this property does not hold. The general idea is that one ...
متن کاملEscaping orbits in trace maps
We study the finitely-generated group A of invertible polynomial mappings from @ to itself (or Iw3 to itself) which preserve the Fricke-Vogt invariant 1(x, y, z) = x2 + y* + z* 2xyz 1. Using properties of suitably-chosen generators, we give a necessary condition and sufficient conditions for infinite order elements of A to have an unbounded orbit escaping to infinity in forward or backward time...
متن کاملPoint Interaction Hamiltonians in Bounded Domains
Making use of recent techniques in the theory of selfadjoint extensions of symmetric operators, we characterize the class of point interaction Hamiltonians in a 3-D bounded domain with regular boundary. In the particular case of one point interaction acting in the center of a ball, we obtain an explicit representation of the point spectrum of the operator togheter with the corresponding related...
متن کاملAlmost Periodic Orbits and Stability for Quantum Time-dependent Hamiltonians
We study almost periodic orbits of quantum systems and prove that for periodic time-dependent Hamiltonians an orbit is almost periodic if, and only if, it is precompact. In the case of quasiperiodic time-dependence we present an example of a precompact orbit that is not almost periodic. Finally we discuss some simple conditions assuring dynamical stability for nonautonomous quantum system.
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: Journal of Mathematical Analysis and Applications
سال: 2000
ISSN: 0022-247X
DOI: 10.1006/jmaa.2000.6876