scholarly journals Unified model beyond grand unification

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Juven Wang
Keyword(s):  
Unified Model ◽  
Grand Unification

MONOPOLES ARE NOT AN INEVITABLE CONSEQUENCE OF THE GRAND UNIFICATION

1988 ◽  
Vol 03 (14) ◽  
pp. 1379-1384
Author(s):  
N.V. KRASNIKOV
Keyword(s):  
Field Theory ◽  
Gauge Field ◽  
Special Kind ◽  
Unified Model ◽  
Grand Unification ◽  
Gauge Field Theory ◽  
Pure Gauge ◽  
Kaluza Klein

We give an example of the grand unified model without monopoles which arises in Kaluza-Klein compactification of a pure gauge field theory of the special kind.

scholarly journals A LOW αs AND ITS CONSEQUENCES FOR UNIFIED MODEL BUILDING

1996 ◽  
Vol 11 (10) ◽  
pp. 1699-1713 ◽  
Author(s):  
BISWAJOY BRAHMACHARI ◽  
RABINDRA N. MOHAPATRA
Keyword(s):  
Model Building ◽  
New Physics ◽  
Unified Model ◽  
Low Energy ◽  
Grand Unification ◽  
Gut Scale

We review various ways of obtaining consistency between the idea of supersymmetric grand unification and an apparent low value of αs~0.112 indicated by several low energy experiments. We argue that to reconcile the low value of αs with the predictions of supersymmetric GUT’s, we need to go beyond the standard minimal supersymmetric GUT scenario and invoke new physics either at 1011–1012 GeV or at the GUT scale.

scholarly journals What Physics Drives the Unified Model?

1999 ◽  
Vol 194 ◽  
pp. 199-207
Author(s):  
Michael A. Dopita
Keyword(s):  
Black Hole ◽  
Active Galactic Nucleus ◽  
Accretion Rate ◽  
Unified Model ◽  
Grand Unification ◽  
Evolutionary Status ◽  
Central Black Hole ◽  
Nuclear Regions

The Unified Model holds that the aspect-dependent effects primarily determine the apperance of the active galactic nucleus that we observe. However, additional parameters will be needed to fully unify the different tribes of AGN. Three parameters; aspect, accretion rate into the nuclear regions, and the evolutionary status of the central black hole probably hold the key to “grand” unification schemes.

GRAND UNIFICATION AND GRASSMANNIAN KALUZA-KLEIN THEORY

1988 ◽  
Vol 03 (11) ◽  
pp. 1073-1078 ◽  
Author(s):  
R. DELBOURGO ◽  
S. TWISK ◽  
R.B. ZHANG
Keyword(s):  
Space Time ◽  
Unified Model ◽  
Grand Unification ◽  
Klein Theory ◽  
Grassmann Variables ◽  
Kaluza Klein

It is possible to construct a grand unified model, including gravity, by adjoining further anticommuting coordinates to space-time. We carry out this program for SU(5) and SO(10) unified models; curiously, the former is much more economical than the latter and simply requires five complex Grassmann variables ξm in addition to the four xμ.

FORCE MAJEURE, CHANGE OF CIRCUMSTANCES AND TERMINATION OF CONTRACT

2016 ◽  
Vol 3 (1) ◽  
pp. 31-44
Author(s):  
Shiyuan Han
Keyword(s):  
United Nations ◽  
Contract Law ◽  
Unified Model ◽  
The Other ◽  
Final Decision ◽  
Dual Model ◽  
Chinese Law ◽  
Force Majeure ◽  
United Nations Convention ◽  
Distinct Line

It is impossible to draw a distinct line between force majeure and change of circumstances, because the two overlap. In order to regulate both force majeure and change of circumstances, the United Nations Convention on Contracts for the International Sale of Goods (CISG) has adopted a unified model in article 79, whereas Chinese law adopts a dual model by treating them as different things and regulating them in different articles. Where the purpose of a contract becomes impossible to achieve because of a force majeure and both the CISG and Chinese Contract Law (the CCL) adopt the same model of termination of the contract, the contract should be terminated by one party with a notice to the other party instead of ipso facto avoidance. In a case of a change of circumstances, in order to terminate the contract, both the CISG and the CCL actually follow the path of raising an action by a notice of avoidance or termination to theother party. Both approaches have their merits and demerits but the differences between them in practice are not as large as presumed. Where force majeure and change of circumstances overlap each other, possible ways for termination of the contract are for a party either to choose their preferred solution or to follow the lex specialis derogat generali. The latter way is preferred in this article; and while in an action for termination the judge may balance the interests of both parties in making a final decision, the uniform application of the law, the safety of the transaction and the fairness of the judgment may be ensured in so doing.

The role of Narrow Line Seyfert 1 galaxies in the frame of the AGN Unified Model

2013 ◽  
Author(s):  
Valentina Cracco ◽  
Stefano Ciroi ◽  
Marco Berton ◽  
Elena Sissa ◽  
Francesco Di Mille ◽  
...  
Keyword(s):  
Unified Model ◽  
Narrow Line
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