Christian Pfeifer
University of Tartu
106 Papers
342 Citations
Christian Pfeifer is an academic researcher from University of Tartu. The author has contributed to research in topics: Spacetime & General relativity. The author has an hindex of 22, co-authored 88 publications. Previous affiliations of Christian Pfeifer include University of Bremen & University of Hamburg.
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Papers
•Posted Content
Modified Gravity and Cosmology: An Update by the CANTATA Network
Emmanuel N. Saridakis,Ruth Lazkoz,Vincenzo Salzano,Paulo Vargas Moniz,Salvatore Capozziello,Jose Beltrán Jiménez,Mariafelicia De Laurentis,Gonzalo J. Olmo,Yashar Akrami,Sebastian Bahamonde,Jose Luis Blázquez-Salcedo,Christian G. Böhmer,Camille Bonvin,Mariam Bouhmadi-López,Philippe Brax,Gianluca Calcagni,Roberto Casadio,Jose A. R. Cembranos,Álvaro de la Cruz-Dombriz,Anne-Christine Davis,Adrià Delhom,Eleonora Di Valentino,Konstantinos F. Dialektopoulos,Benjamin Elder,Jose María Ezquiaga,Noemi Frusciante,Remo Garattini,László Á. Gergely,Andrea Giusti,Lavinia Heisenberg,Manuel Hohmann,Damianos Iosifidis,Lavrentios Kazantzidis,Burkhard Kleihaus,Tomi S. Koivisto,Jutta Kunz,Francisco S. N. Lobo,Matteo Martinelli,Prado Martín-Moruno,José P. Mimoso,David F. Mota,Simone Peirone,Leandros Perivolaropoulos,Valeria Pettorino,Christian Pfeifer,Lorenzo Pizzuti,Diego Rubiera-Garcia,Jackson Levi Said,Mairi Sakellariadou,Ippocratis D. Saltas,Alessio Spurio Mancini,Nicoleta Voicu,Aneta Wojnar +52 more
TL;DR: In this paper, the authors present the recent developments in the fields of gravity and cosmology, presenting the state of the art, highlighting the open problems, and outlining the directions of future research.
160
Finsler gravity action from variational completion
TL;DR: In this paper, the authors employ the method of canonical variational completion to show that Rutz equation can not be obtained from a variation of an action and that its variational complete yields the latter field equations.
91
Scalar-torsion theories of gravity. II. L ( T , X , Y , ϕ ) theory
Manuel Hohmann,Christian Pfeifer +1 more
TL;DR: In this paper, the authors consider Lorentz invariant scalar-tensor teleparallel gravity theories with a Lagrangian built from the torsion scalar, a scalar field, its kinetic term and a derivative coupling between the Torsion and the scalar fields.
75
Hamiltonian and primary constraints of new general relativity
TL;DR: In this article, the kinematic Hamiltonian for the so-called "new general relativity" class of teleparallel gravity theories was derived using an explicit expression for the flat, in general, nonvanishing spin connection, which avoids the use of Lagrange multipliers and keeps the theory invariant under local Lorentz transformations.
57
On the gauge fixing in the Hamiltonian analysis of general teleparallel theories
TL;DR: In this article, it was shown that fixing the gauge such that the spin connection vanishes in fact does not affect the counting of degrees of freedom in the Hamiltonian analysis of teleparallel theories of gravity.
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