Title
Cosmology, GUTs, Strings, and the Pentagon,Used
Delivery time: 8-12 business days (International)
The Pentagon Model is an explicit supersymmetric extension of the Standard Model, which involves a new stronglyinteracting SU(5) gauge theory at TeVscale energies. We explore extensions of the Pentagon model in the contexts of cosmology, grand unied theory, and string theory: (i) We present a new mechanism for baryogenesis, which links the baryon asymmetry of the universe to the dark matter density. (ii) We show that the Pentagon can be embedded into an SU(5) x SU(5) x SU(5) gauge group at the GUT scale. The doublettriplet splitting problem, and proton decay compatible with experimental bounds, can be successfully addressed in this context. (iii) We discuss embeddings into string theory, specically N = 1 supersymmetric type IIa intersecting Dbrane models, Mtheory compactications of G2 holonomy, and heterotic orbifold constructions.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.