The Hulthen potential [a1] is given by
where is the screening parameter and z is a constant which is identified with the atomic number when the potential is used for atomic phenomena.
The Hulthen potential is a short-range potential which behaves like a Coulomb potential for small values of and decreases exponentially for large values of . The Hulthen potential has been used in many branches of physics, such as nuclear physics [a2], atomic physics [a3], [a4], solid state physics [a5], and chemical physics [a6]. The model of the three-dimensional delta-function could well be considered as a Hulthen potential with the radius of the force going down to zero [a7]. The Schrödinger equation for this potential can be solved in a closed form for waves. For , a number of methods have been employed to find approximate solutions for the Schrödinger equation with the Hulthen potential [a8], [a9], [a10], [a11]. The Dirac equation with the Hulthen potential has also been studied using an algebraic approach [a12].
|[a1]||L. Hulthen, Ark. Mat. Astron. Fys , 28A (1942) pp. 5 (Also: 29B, 1)|
|[a2]||L. Hulthen, M. Sugawara, S. Flugge (ed.) , Handbuch der Physik , Springer (1957)|
|[a3]||T. Tietz, J. Chem. Phys. , 35 (1961) pp. 1917|
|[a4]||C.S. Lam, Y.P. Varshni, Phys. Rev. A , 4 (1971) pp. 1875|
|[a5]||A.A. Berezin, Phys. Status. Solidi (b) , 50 (1972) pp. 71|
|[a6]||P. Pyykko, J. Jokisaari, Chem. Phys. , 10 (1975) pp. 293|
|[a7]||A.A. Berezin, Phys. Rev. B , 33 (1986) pp. 2122|
|[a8]||C.S. Lai, W.C. Lin, Phys. Lett. A , 78 (1980) pp. 335|
|[a9]||S.H. Patil, J. Phys. A , 17 (1984) pp. 575|
|[a10]||V.S. Popov, V.M. Wienberg, Phys. Lett. A , 107 (1985) pp. 371|
|[a11]||B. Roy, R. Roychoudhury, J. Phys. A , 20 (1987) pp. 3051|
|[a12]||B. Roy, R. Roychoudhury, J. Phys. A , 23 (1990) pp. 5095|
Hulthen potential. R. Roychoudhury (originator), Encyclopedia of Mathematics. URL: http://www.encyclopediaofmath.org/index.php?title=Hulthen_potential&oldid=13270