scholarly journals G-bounce inflation: towards nonsingular inflation cosmology with galileon field

2015 ◽  
Vol 2015 (4) ◽  
Author(s):  
Taotao Qiu ◽  
Yu-Tong Wang
Keyword(s):  
Galileon Field

scholarly journals On the flat spacetime Galileons and the Born–Infeld type structures

2015 ◽  
Vol 24 (06) ◽  
pp. 1550041
Author(s):  
Cuauhtemoc Campuzano ◽  
Rubén Cordero ◽  
Miguel Cruz ◽  
Efraín Rojas
Keyword(s):  
Scalar Field ◽  
Variational Analysis ◽  
Momentum Density ◽  
Type Structure ◽  
Field Theories ◽  
Flat Spacetime ◽  
Arbitrary Dimensions ◽  
Derivatives Of ◽  
Galileon Field

We show how the flat spacetime Galileon field theories (FSGFT) in arbitrary dimensions can be obtained through a Born–Infeld (BI) type structure. This construction involves a brane metric and nonlinear combinations of derivatives of a scalar field. Our setup gives rise to some Galileon tensors and vectors useful for the variational analysis which are related to the momentum density of the probe Lovelock branes floating in a N-dimensional flat bulk. We find further that the Noether currents associated to these Galileon theories may be written in terms of such tensors.

scholarly journals Cosmological implications of a shift symmetric Galileon field

2017 ◽  
Vol 96 (6) ◽  
Author(s):  
Rabin Banerjee ◽  
Sumanta Chakraborty ◽  
Arpita Mitra ◽  
Pradip Mukherjee
Keyword(s):  
Galileon Field

scholarly journals Hamiltonian of Galileon field theory

2012 ◽  
Vol 85 (8) ◽  
Author(s):  
Vishagan Sivanesan
Keyword(s):  
Field Theory ◽  
Galileon Field

scholarly journals Parametrized post-Newtonian-Vainshteinian formalism for the Galileon field

2019 ◽  
Vol 99 (8) ◽  
Author(s):  
Nadia Bolis ◽  
Constantinos Skordis ◽  
Daniel B. Thomas ◽  
Tom Złośnik
Keyword(s):  
Galileon Field

scholarly journals Galileon string measure and other modified measure extended objects

2017 ◽  
Vol 32 (38) ◽  
pp. 1750211 ◽  
Author(s):  
T. O. Vulfs ◽  
E. I. Guendelman
Keyword(s):  
String Theory ◽  
Sigma Model ◽  
Equations Of Motion ◽  
String Tension ◽  
Gauge Transformations ◽  
Higher Derivative ◽  
Dynamical Degree ◽  
Integration Measure ◽  
Definition Of ◽  
Galileon Field

We show that it is possible to formulate string theory as a “Galileon string theory”. The Galileon field [Formula: see text] enters in the definition of the integration measure in the action. Following the methods of the modified measure string theory, we find that the final equations are again those of the sigma-model. Moreover, the string tension appears again as an additional dynamical degree of freedom. At the same time, the theory satisfies all requirements of the Galileon higher derivative theory at the action level while the equations of motion are still of the second-order. A Galileon symmetry is displayed explicitly in the conformal string worldsheet frame. Also, we define the Galileon gauge transformations. Generalizations to branes with other modified measures are discussed.

scholarly journals Cosmology of a Covariant Galileon Field

2010 ◽  
Vol 105 (11) ◽  
Author(s):  
Antonio De Felice ◽  
Shinji Tsujikawa
Keyword(s):  
Galileon Field

scholarly journals Inflation Driven by the Galileon Field

2010 ◽  
Vol 105 (23) ◽  
Author(s):  
Tsutomu Kobayashi ◽  
Masahide Yamaguchi ◽  
Jun’ichi Yokoyama
Keyword(s):  
Galileon Field

scholarly journals Late-time acceleration in a slow-moving Galileon field

2013 ◽  
Vol 88 (2) ◽  
Author(s):  
Debabrata Adak ◽  
Amna Ali ◽  
Debasish Majumdar
Keyword(s):  
Late Time ◽  
Late Time Acceleration ◽  
Slow Moving ◽  
Galileon Field
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