@article {edselc.2-52.0-8005407867620111028,
	title = {On the observability and asymmetry of adiabatic state flips generated by exceptional points},
	journal = {Journal of Physics A: Mathematical and Theoretical},
	volume = {44},
	year = {2011},
	pages = {435302},
	abstract = {In open quantum systems where the effective Hamiltonian is not Hermitian, it is known that the adiabatic (or instantaneous) basis can be multivalued: by adiabatically transporting an eigenstate along a closed loop in the parameter space of the Hamiltonian, it is possible to end up in an eigenstate different from the initial eigenstate. This {\textquoteright}adiabatic flip{\textquoteright} effect is an outcome of the appearance of a degeneracy known as an {\textquoteright}exceptional point{\textquoteright} inside the loop. We show that contrary to what is expected of the transport properties of the eigenstate basis, the interplay between gain/loss and non-adiabatic couplings imposes fundamental limitations on the observability of this adiabatic flip effect.},
	issn = {17518113},
	url = {http://search.ebscohost.com/login.aspx?direct=true\&db=edselc\&AN=edselc.2-52.0-80054078676\&site=eds-live},
	author = {Uzdin, R. and Moiseyev, N. and Mailybaev, A.}
}
