Anisotropic constant-roll inflation with noncommutative model and swampland conjectures
@inproceedings{Sadeghi2021AnisotropicCI, title={Anisotropic constant-roll inflation with noncommutative model and swampland conjectures}, author={J. Sadeghi and Saeed Noori Gashti}, year={2021} }
In this paper, we study a constant-roll inflationary model in the presence of a noncommutative parameter with a homogeneous scalar field minimally coupled to gravity. The specific noncommutative inflation conditions proposed new consequences. On the other hand, we use anisotropic conditions and find new anisotropic constant-roll solutions with respect to noncommutative parameter. Also, we will plot some figures with respect to the specific values of the corresponding parameter and the swampland…
4 Citations
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References
SHOWING 1-10 OF 154 REFERENCES
NONCOMMUTATIVE SPACETIME EFFECT ON THE SLOW-ROLL PERIOD OF INFLATION
- Mathematics
- 2005
We study how the noncommutative spacetime affects inflation. First we obtain the noncommutative power spectrum of the curvature perturbations produced during inflation in the slow-roll approximation.…
Comments on noncommutative perturbative dynamics
- Mathematics
- 2000
We analyze further the IR singularities that appear in noncommutative field theories on d. We argue that all IR singularities in nonplanar one loop diagrams may be interpreted as arising from the…
Primordial Fluctuations from Inflation with a Triad of Background Gauge Fields
- Physics
- 2012
We study the linear perturbation of the recently proposed model of inflation where a uniform gauge-kinetic coupling of the inflaton to multiple vector fields breaks the cosmic no-hair conjecture…
Inflation with Multi-Vector-Hair: The Fate of Anisotropy
- Physics
- 2012
We study inflation with multiple vector fields. In the presence of non-trivial couplings between the inflaton and the vector fields, it turns out that no-hair?conjecture does not hold and vector hair…
Anisotropic power-law inflation in a two-scalar-field model with a mixed kinetic term
- Physics, Mathematics
- 2017
We examine whether an extended scenario of a two-scalar-field model, in which a mixed kinetic term of canonical and phantom scalar fields is involved, admits the Bianchi type I metric, which is…
CMB power spectrum from noncommutative spacetime
- Physics
- 2003
Very recent CMB data of WMAP offers an opportunity to test inflation models, in particular, the running of spectral index is quite new and can be used to rule out some models. We show that an…
String theory and noncommutative geometry
- Mathematics, Physics
- 1999
We extend earlier ideas about the appearance of noncommutative geometry in string theory with a nonzero B-field. We identify a limit in which the entire string dynamics is described by a minimally…