TY - GEN
T1 - Multivalued lagrangians and non-singular cosmologies
AU - Ansoldi, S.
AU - Guendelman, E. I.
AU - Ishihara, H.
PY - 2012/1/1
Y1 - 2012/1/1
N2 - In high energy physics renormalization group techniques suggest the possibility that Lagrangians could be multi-valued functions of scalars built from the fields. In a simplified model we investigate the consequences of an analogous formulation in the context of gravitational theories. In this case the curvature can naturally acquire an upper bound. We then suggest that it could be interesting to use this property to address the singularity problem in cosmological models.
AB - In high energy physics renormalization group techniques suggest the possibility that Lagrangians could be multi-valued functions of scalars built from the fields. In a simplified model we investigate the consequences of an analogous formulation in the context of gravitational theories. In this case the curvature can naturally acquire an upper bound. We then suggest that it could be interesting to use this property to address the singularity problem in cosmological models.
KW - Modified gravity theories
KW - Multivalued lagrangians
KW - Non-singular cosmologies
KW - Renormalization group
UR - http://www.scopus.com/inward/record.url?scp=84885658352&partnerID=8YFLogxK
U2 - 10.1142/9789814374552_0225
DO - 10.1142/9789814374552_0225
M3 - Conference contribution
AN - SCOPUS:84885658352
SN - 9814374512
SN - 9789814374514
T3 - 12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity
SP - 1393
EP - 1395
BT - 12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity
PB - World Scientific Publishing Co. Pte Ltd
T2 - 12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009
Y2 - 12 July 2009 through 18 July 2009
ER -