Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Khuri N"'
Publikováno v:
J. Math. Phys. 50, 072105 (2009)
Conditions are established for the existence of a scattering length and an effective range in the low-energy expansion of the S-wave phase-shift of a central potential in two and three dimensions. The behavior of the phase-shift as a function of the
Externí odkaz:
http://arxiv.org/abs/0812.4054
For the energy of 14 TeV, to be reached at the Large Hadron Collider (LHC), we have had for some time accurate predictions for both the real and imaginary parts of the forward proton-proton elastic scattering amplitude. LHC is now scheduled to start
Externí odkaz:
http://arxiv.org/abs/hep-ph/0511135
Publikováno v:
J.Math.Phys. 46 (2005) 032103; Erratum-ibid. 46 (2005) 129901
For a very large class of potentials, $V(\vec{x})$, $\vec{x}\in R^2$, we prove the universality of the low energy scattering amplitude, $f(\vec{k}', \vec{k})$. The result is $f=\sqrt{\frac{\pi}{2}}\{1/log k)+O(1/(log k)^2)$. The only exceptions occur
Externí odkaz:
http://arxiv.org/abs/hep-th/0401222
Publikováno v:
J.Math.Phys. 44 (2003) 406-422
In this paper we study the number of bound states for potentials in one and two spatial dimensions. We first show that in addition to the well-known fact that an arbitrarily weak attractive potential has a bound state, it is easy to construct example
Externí odkaz:
http://arxiv.org/abs/math-ph/0208011
Publikováno v:
Few Body Syst. 31 (2002) 83-89
We stress that in contradiction with what happens in space dimensions $n \geq 3$, there is no strict bound on the number of bound states with the same structure as the semi-classical estimate for large coupling constant and give, in two dimensions, e
Externí odkaz:
http://arxiv.org/abs/hep-th/0112021
Autor:
Khuri, N. N.
Publikováno v:
Math.Phys.Anal.Geom. 5 (2002) 1-63
We use inverse scattering methods, generalized for a specific class of complex potentials, to construct a one parameter family of complex potentials V(s, r) which have the property that the zero energy s-wave Jost function, as a function of s alone,
Externí odkaz:
http://arxiv.org/abs/hep-th/0111067
Publikováno v:
Phys.Rev.D58:025014,1998
We prove that, in (2+1) dimensions, the S-wave phase shift, $ \delta_0(k)$, k being the c.m. momentum, vanishes as either $\delta_0 \to {c\over \ln (k/m)} or \delta_0 \to O(k^2)$ as $k\to 0$. The constant $c$ is universal and $c=\pi/2$. This result i
Externí odkaz:
http://arxiv.org/abs/hep-th/9805036
Autor:
Khuri, N. N.
We show that, even for a soft collision like forward elastic scattering, the phase of the amplitude is extremely sensitive to a breakdown of strict causality in local QFT. This is especially the case when the breakdown is manifested by a failure of p
Externí odkaz:
http://arxiv.org/abs/hep-ph/9512386
Autor:
Khuri, N. N.
Publikováno v:
Annals Phys. 242 (1995) 332-348
In this paper we consider non-relativistic quantum mechanics on a space with an additional internal compact dimension, i.e. $R^3\otimes S^1$ instead of $R^3$. More specifically we study potential scattering for this case and the analyticity propertie
Externí odkaz:
http://arxiv.org/abs/hep-th/9410129
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