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Massless Fermions Generated by Ultrashort Laser Pulses
M. Pelc, J. Marciak-Kozlowska and M. Kozlowski

In this paper the interaction of ultra-short laser pulses with matter is considered. Based on the thermal Klein-Gordon equation for heat transport, the condition for the existence of mass-less fermions could be expressed. This condition is Vt > -, where V is the potential energy and t is the relaxation time. The mass less electrons in graphene and mass-less nucleons in 2D nuclei are discussed.

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