@article{ISI:000245329100056,
 abstract = {We present a spin-1 chain with a Hamiltonian which has three exactly
solvable ground states. Two of these are fully dimerized, analogous to
the Majumdar-Ghosh (MG) states of a spin-(1)/(2) chain, while the third
is of the Affleck-Kennedy-Lieb-Tasaki (AKLT) type. We use variational
and numerical methods to study the low-energy excitations which
interpolate between these ground states in different ways. In
particular, there is a spin-(1)/(2) excitation which interpolates
between the MG and AKLT ground states; this is the lowest excitation of
the system and it has a surprisingly small gap. We discuss
generalizations of our model of spin fractionalization to higher spin
chains and higher dimensions.},
 article-number = {104411},
 author = {Sen, Diptiman and Surendran, Naveen},
 doi = {10.1103/PhysRevB.75.104411},
 eissn = {2469-9969},
 issn = {2469-9950},
 journal = {PHYSICAL REVIEW B},
 month = {MAR},
 number = {10},
 times-cited = {3},
 title = {Spin-1 chain with spin-1/2 excitations in the bulk},
 unique-id = {ISI:000245329100056},
 volume = {75},
 year = {2007}
}