Publications

J. Main, G. Wiebusch, A. Holle, and K. H. Welge. New Quasi-Landau Structure of Highly Excited Atoms: The Hydrogen Atom. Phys. Rev. Lett., (57)22:2789--2792, American Physical Society, December 1986. [PUMA: main_itp1] URL

A. Holle, G. Wiebusch, J. Main, B. Hager, H. Rottke, and K. H. Welge. Diamagnetism of the Hydrogen Atom in the Quasi-Landau Regime. Phys. Rev. Lett., (56)24:2594--2597, American Physical Society, June 1986. [PUMA: main_itp1] URL

A. Holle, J. Main, G. Wiebusch, H. Rottke, and K. H. Welge. Quasi-Landau Spectrum of the Chaotic Diamagnetic Hydrogen Atom. Phys. Rev. Lett., (61)2:161--164, American Physical Society, July 1988. [PUMA: main_itp1] URL

G. Wiebusch, J. Main, K. Krüger, H. Rottke, A. Holle, and K. H. Welge. Hydrogen atom in crossed magnetic and electric fields. Phys. Rev. Lett., (62)24:2821--2824, American Physical Society, June 1989. [PUMA: main_itp1] URL

Jörg Main, and Günter Wunner. Ericson fluctuations in the chaotic ionization of the hydrogen atom in crossed magnetic and electric fields. Phys. Rev. Lett., (69)4:586--589, American Physical Society, July 1992. [PUMA: main_itp1] URL

J. Main, G. Wiebusch, K. Welge, J. Shaw, and J. B. Delos. Recurrence spectroscopy: Observation and interpretation of large-scale structure in the absorption spectra of atoms in magnetic fields. Phys. Rev. A, (49)2:847--868, American Physical Society, February 1994. [PUMA: main_itp1] URL

Bruno Hüpper, Jörg Main, and Günter Wunner. Photoabsorption of Nonhydrogenic Rydberg Atoms in a Magnetic Field: Effects of Core-Scattered Classical Orbits. Phys. Rev. Lett., (74)14:2650--2653, American Physical Society, April 1995. [PUMA: main_itp1] URL

Bruno Eckhardt, Shmuel Fishman, Jonathan Keating, Oded Agam, Jörg Main, and Kirsten Müller. Approach to ergodicity in quantum wave functions. Phys. Rev. E, (52)6:5893--5903, American Physical Society, December 1995. [PUMA: main_itp1] URL

Bruno Eckhardt, and Jörg Main. Semiclassical Form Factor of Matrix Element Fluctuations. Phys. Rev. Lett., (75)12:2300--2303, American Physical Society, September 1995. [PUMA: main_itp1] URL

Bruno Hüpper, Jörg Main, and Günter Wunner. Nonhydrogenic Rydberg atoms in a magnetic field: A rigorous semiclassical approach. Phys. Rev. A, (53)2:744--759, American Physical Society, February 1996. [PUMA: main_itp1] URL

D. Boosé, and J. Main. Transition matrix elements in mixed quantum systems. Physics Letters A, (217)4:253 - 257, 1996. [PUMA: main_itp1] URL

Jörg Main, and Günter Wunner. Hydrogen atom in a magnetic field: Ghost orbits, catastrophes, and uniform semiclassical approximations. Phys. Rev. A, (55)3:1743--1759, American Physical Society, March 1997. [PUMA: main_itp1] URL

Jörg Main, Christof Jung, and Howard S. Taylor. Extracting the dynamics in classically chaotic quantum systems: Spectral analysis of the HO2 molecule. J. Chem. Phys., (107)17:6577--6583, American Institute of Physics, November 1997. [PUMA: main_itp1] URL

Jörg Main, Vladimir A. Mandelshtam, and Howard S. Taylor. High Resolution Quantum Recurrence Spectra: Beyond the Uncertainty Principle. Phys. Rev. Lett., (78)23:4351--4354, American Physical Society, June 1997. [PUMA: main_itp1] URL

Jörg Main, Vladimir A. Mandelshtam, and Howard S. Taylor. Periodic Orbit Quantization by Harmonic Inversion of Gutzwiller's Recurrence Function. Phys. Rev. Lett., (79)5:825--828, American Physical Society, August 1997. [PUMA: main_itp1] URL

Jörg Main, Michael Schwacke, and Günter Wunner. Hydrogen atom in combined electric and magnetic fields with arbitrary mutual orientations. Phys. Rev. A, (57)2:1149--1157, American Physical Society, February 1998. [PUMA: main_itp1] URL

Jörg Main, and Günter Wunner. Uniform semiclassical approximations for umbilic bifurcation catastrophes. Phys. Rev. E, (57)6:7325--7328, American Physical Society, June 1998. [PUMA: main_itp1] URL

Kirsten Weibert, Jörg Main, and Günter Wunner. General Rydberg Atoms in Crossed Electric and Magnetic Fields: Calculation of Semiclassical Recurrence Spectra with Special Emphasis on Core Effects. Annals of Physics, (268)1:172 - 204, 1998. [PUMA: main_itp1] URL

Jörg Main, Kirsten Weibert, and Günter Wunner. $\Elzxh$ expansion for the periodic orbit quantization by harmonic inversion. Phys. Rev. E, (58)4:4436--4439, American Physical Society, October 1998. [PUMA: main_itp1] URL

Jörg Main, and Günter Wunner. Semiclassical calculation of transition matrix elements for atoms in external fields. Phys. Rev. A, (59)4:R2548--R2551, American Physical Society, April 1999. [PUMA: main_itp1] URL