Signatures ofS-wave bound-state formation in finite volume
نویسندگان
چکیده
منابع مشابه
Signatures of S - wave bound - state formation in finite volume
We discuss formation of an S-wave bound state in finite volume on the basis of Lüscher’s phaseshift formula. It is found that although a bound-state pole condition is fulfilled only in the infinite volume limit, its modification by the finite size corrections is exponentially suppressed by the spatial extent L in a finite box L. We also confirm that the appearance of the S-wave bound state is a...
متن کاملBound state spectrum in the finite volume
The signature of bound state formation on the lattice is of particular interest in this talk. In the finite volume, where all states have discrete energies, it is rather hard to distinguish between a bound state and a scattering state if the bound state were close to threshold, i.e. like a “loosely bound state”. To study bound states in the finite volume, we calculate the positronium spectrosco...
متن کاملFrom Signatures to Finite State Automata
In this paper, we outline the design of a nondeterministic finite state automaton (NFSA) for natural language morphology, and compare it to previous work in unsupervised learning of morphology. In Section 2, we describe the nature of an MDL-based system for unsupervised learning of morphology, using the signature-based model of Goldsmith 2001 as an example, and we describe some drawbacks of the...
متن کاملBound-state signatures in quenched Bose-Einstein condensates
We investigate the dynamics of a homogenous Bose-Einstein condensate (BEC) following a sudden quench of the scattering length. Our focus is the time evolution of short-range correlations via the dynamical contact. We compute the dynamics using a combination of twoand many-body models and we propose an intuitive connection between them that unifies their short-time, short-range predictions. Our ...
متن کاملIdentification of shallow two-body bound states in finite volume
We discuss signatures of bound-state formation in finite volume via the Lüscher finite size method. Assuming that the phase-shift formula in this method inherits all aspects of the quantum scattering theory, we may expect that the bound-state formation induces the sign of the scattering length to be changed. If it were true, this fact provides us a distinctive identification of a shallow bound ...
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: Physical Review D
سال: 2006
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.74.114507