scholarly journals Observable traces of non-metricity: New constraints on metric-affine gravity

2018 ◽  
Vol 780 ◽  
pp. 294-299 ◽  
Author(s):  
Adrià Delhom-Latorre ◽  
Gonzalo J. Olmo ◽  
Michele Ronco
Keyword(s):  
Affine Gravity

scholarly journals Gravitational waves in metric-affine gravity theory

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
Alejandro Jiménez-Cano ◽  
Yuri N. Obukhov
Keyword(s):  
Gravitational Waves ◽  
Gravity Theory ◽  
Affine Gravity

scholarly journals Scattering amplitudes in affine gravity

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Benjamin Knorr ◽  
Chris Ripken
Keyword(s):  
Scattering Amplitudes ◽  
Affine Gravity

scholarly journals Projective symmetries and induced electromagnetism in metric-affine gravity

2018 ◽  
Vol 786 ◽  
pp. 462-465 ◽  
Author(s):  
Bert Janssen ◽  
Alejandro Jiménez-Cano
Keyword(s):  
Affine Gravity

scholarly journals Metric-affine gravity effects on terrestrial exoplanet profiles

2021 ◽  
Vol 104 (8) ◽  
Author(s):  
Aleksander Kozak ◽  
Aneta Wojnar
Keyword(s):  
Gravity Effects ◽  
Affine Gravity

scholarly journals Quadratic metric-affine gravity

2005 ◽  
Vol 14 (4) ◽  
pp. 231-252 ◽  
Author(s):  
D. Vassiliev
Keyword(s):  
Affine Gravity

Metric-Affine Gravity

2021 ◽  
pp. 129-142
Author(s):  
Damianos Iosifidis ◽  
Emmanuel N. Saridakis
Keyword(s):  
Affine Gravity

scholarly journals Are there really conformal frames? Uniqueness of affine inflation

2018 ◽  
Vol 27 (09) ◽  
pp. 1830006 ◽  
Author(s):  
Hemza Azri
Keyword(s):  
Affine Connection ◽  
Scalar Fields ◽  
A Posteriori ◽  
Nonminimal Coupling ◽  
Metric Tensor ◽  
Coupling Dynamics ◽  
Conformal Frames ◽  
Affine Gravity ◽  
Inflationary Models ◽  
Field Redefinition

Here, we concisely review the nonminimal coupling dynamics of a single scalar field in the context of purely affine gravity and extend the study to multifield dynamics. The coupling is performed via an affine connection and its associated curvature without referring to any metric tensor. The latter arises a posteriori and it may gain an emergent character like the scale of gravity. What is remarkable in affine gravity is the transition from nonminimal to minimal couplings which is realized by only field redefinition of the scalar fields. Consequently, the inflationary models gain a unique description in this context where the observed parameters, like the scalar tilt and the tensor-to-scalar ratio, are invariant under field reparametrization. Overall, gravity in its affine approach is expected to reveal interesting and rich phenomenology in cosmology and astroparticle physics.

scholarly journals Scalars, vectors and tensors from metric-affine gravity

2012 ◽  
Vol 45 (2) ◽  
pp. 319-343 ◽  
Author(s):  
Canan N. Karahan ◽  
Aslı Altaş ◽  
Durmuş A. Demir
Keyword(s):  
Affine Gravity
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