Paper "Tomographic imaging of molecular orbitals" by J. Itatani. in Nature challenges common QM (quantum mechanics) interpretation of orbitals as pure mathematical constructs.
Authors goes as far as to say that they experimentally measured HOMO (highest occupied molecular orbital). Is that possible indeed or is it just a wrong interpretation of the experiment?

The paper could be found at:
http://spectroscopy.mps.ohio-state.edu/institute/2007/corkum/nature_Tomography.pdf

I appreciate your comments on this issue.

You can vote on this question here:
http://www.webqc.org/chemicalforum/viewtopic.php?t=466

[UPDATE] I've published critical review of this paper in another post:
http://vitalii.chemicalblogs.com/2_computational_chemistry/archive/480_review_are_orbitals_real.html