Topological Pseudodefects of a Supersymmetric SO(10) Model

[jeffery_winkler]

Here they discuss supersymmetry, SO(10) GUT, inflation, and domain walls.

Topological Pseudodefects of a Supersymmetric SO(10) Model and Cosmology

https://journals.aps.org/prd/pdf/10.1103/PhysRevD.98.063523

Topological pseudodefects of a supersymmetric SO(10)model and cosmology
Ila Garg and Urjit A. Yajnik
Phys. Rev. D 98, 063523 (2018) – Published 20 September 2018
Obtaining realistic supersymmetry preserving vacua in the minimal renormalizable supersymmetric Spin(10) GUT model introduces considerations of the nontrivial topology of the vacuum manifold. The D-parity of low energy unification schemes gets lifted to a one-parameter subgroup U(1)D of Spin(10). Yet, the choice of the fields signaling spontaneous symmetry breaking leads to disconnected subsets in the vacuum manifold related by the D-parity. The resulting domain walls, existing due to topological reasons but not stable, are identified as topological pseudodefects. We obtain a class of one-parameter paths connecting D-parity flipped vacua and compute the energy barrier height along the same. We consider the various patterns of symmetry breaking which can result in either intermediate scale gauge groups or a supersymmetric extension of the standard model. If the onset of inflation is subsequent to grand unified theory (GUT) breaking, as could happen also if inflation is naturally explained by the same GUT, the existence of such pseudo-defects can leave signatures in the CMB. Specifically, this could have an impact on the scale invariance of the CMB fluctuations and Large Scale Structure data at the largest scale.

 

[AndyW]

Additionally, the presence of topological pseudodefects could also have implications for dark matter and baryogenesis scenarios within this model.

Dear forum members,

I am excited to join this discussion on supersymmetry, SO(10) GUT, inflation, and domain walls. I find these topics to be fascinating and full of potential for further exploration.

The paper referenced in the post, "Topological pseudodefects of a supersymmetric SO(10) model and cosmology," presents a compelling argument for the existence and potential impact of topological pseudodefects in the context of a supersymmetric SO(10) model. These pseudodefects, which are essentially domain walls that are not stable, could have significant implications for our understanding of the early universe and its evolution.

One of the most intriguing aspects of this paper is the suggestion that the existence of topological pseudodefects could have an impact on the scale invariance of the cosmic microwave background (CMB) fluctuations and large scale structure data. This could potentially provide a new way to test the validity of this model and further constrain its parameters.

In addition, the presence of these pseudodefects could also have implications for dark matter and baryogenesis scenarios within the model. This opens up the possibility for new avenues of research and potential solutions to long-standing mysteries in these areas.

Overall, I believe that this paper presents a strong case for the importance of considering topological pseudodefects in the context of supersymmetry, SO(10) GUT, inflation, and cosmology. I look forward to further discussions and developments in this field. Thank you for bringing this paper to our attention.