TY - JOUR
T1 - Negative Temperature for Negative Lapse Function
AU - Volovik, G. E.
N1 - | openaire: EC/H2020/694248/EU//TOPVAC
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Fermion dynamics distinguishes spacetimes having the same metric g
μν , but different tetrads e
μa , and in particular, it distinguishes a lapse with negative sign, N < 0 (M. Christodoulou, A. Riello, and C. Rovelli, Int. J. Mod. Phys. D 21, 1242014 (2012)). Here, we show that the quasiequilibrium thermodynamic state may exist, in which the region with N < 0 has negative local temperature T(r) < 0, while the global Tolman temperature T
0 remains positive. For bosons, only N
2 matters. However, if bosons are composite, they may inherit negative T(r) from the fermions, and thus they may distinguish the spacetimes with positive and negative lapse functions via thermodynamics.
AB - Fermion dynamics distinguishes spacetimes having the same metric g
μν , but different tetrads e
μa , and in particular, it distinguishes a lapse with negative sign, N < 0 (M. Christodoulou, A. Riello, and C. Rovelli, Int. J. Mod. Phys. D 21, 1242014 (2012)). Here, we show that the quasiequilibrium thermodynamic state may exist, in which the region with N < 0 has negative local temperature T(r) < 0, while the global Tolman temperature T
0 remains positive. For bosons, only N
2 matters. However, if bosons are composite, they may inherit negative T(r) from the fermions, and thus they may distinguish the spacetimes with positive and negative lapse functions via thermodynamics.
UR - http://www.scopus.com/inward/record.url?scp=85059687229&partnerID=8YFLogxK
U2 - 10.1134/S002136401901003X
DO - 10.1134/S002136401901003X
M3 - Article
VL - 109
SP - 8
EP - 11
JO - JETP LETTERS / PISMA V ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI
JF - JETP LETTERS / PISMA V ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI
SN - 0021-3640
IS - 1
ER -