%0 Journal Article %T Two-twistor particle models and free massive higher spin fields %A de Azcarraga, J. A. %A Fedoruk, S. %A Izquierdo, J. M. %A Lukierski, J. %J Journal of High Energy Physics %D 2015 %V 04 %N 4 %I Springer %@ 1029-8479 %G English %F deAzcarraga_etal2015 %O WOS:000356852000010 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2293), last updated on Thu, 16 Jul 2015 11:26:13 +0000 %X We present D = 3 and D = 4 world-line models for massive particles moving in a new type of enlarged spacetime, with D-1 additional vector coordinates, which after quantization lead to towers of massive higher spin (HS) free fields. Two classically equivalent formulations are presented: one with a hybrid spacetime/bispinor variables and a second described by a free two-twistor dynamics with constraints. After first quantization in the D = 3 and D = 4 cases, the wave functions satisfying a massive version of Vasiliev's free unfolded equations are given as functions on the SL(2, R) and SL(2, C) group manifolds respectively, which describe arbitrary on-shell momenta and spin degrees of freedom. Further we comment on the D = 6 case, and possible supersymmetric extensions are mentioned as well. Finally, the description of interactions and the Ads/crr duality are briefly considered for massive IHS fields. %K Field Theories in Lower Dimensions %K Higher Spin Symmetry %K Extended Supersymmetry %K Space-Time Symmetries %R 10.1007/JHEP04(2015)010 %U http://arxiv.org/abs/1409.7169 %U https://doi.org/10.1007/JHEP04(2015)010 %P 010-39pp