Home > Terms > English (EN) > grand unified theory (GUT)

grand unified theory (GUT)

An attempt to describe the weak and strong nuclear forces and electromagnetism in a single mathematical theory. Unification of the weak force with electromagnetism has been achieved in the electroweak theory. Before about 10-12 seconds after the Big Bang, by which time the Universe had cooled to about 1015 K, the electromagnetic and weak interactions acted as a single physical force; in the cooler temperatures since then, they have been distinct.

Attempts to unify the electroweak force with the strong nuclear force have been only partially successful. It is thought that the temperature for their unification is of the order of 1027 K, which occurs only 10-36 s after the Big Bang. Particles surviving to the present day from this phase are possible candidates for non-baryonic dark matter. Unification of the GUT interaction with gravity may take place at higher energies still, but there is no satisfactory theory which unifies all four physical forces. Such a theory would be called a theory of everything (TOE).

Collect to Blossary

Member comments

You have to log in to post to discussions.

Terms in the News

Billy Morgan

Sports; Snowboarding

The British snowboarder Billy Morgan has landed the sport’s first ever 1800 quadruple cork. The rider, who represented Great Britain in the 2014 Winter Olympics in Sochi, was in Livigno, Italy, when he achieved the man-oeuvre. It involves flipping four times, while body also spins with five complete rotations on a sideways or downward-facing axis. The trick ...

Marzieh Afkham

Broadcasting & receiving; News

Marzieh Afkham, who is the country’s first foreign ministry spokeswoman, will head a mission in east Asia, the state news agency reported. It is not clear to which country she will be posted as her appointment has yet to be announced officially. Afkham will only be the second female ambassador Iran has had. Under the last shah’s rule, Mehrangiz Dolatshahi, a ...

Weekly Packet

Language; Online services; Slang; Internet

Weekly Packet or "Paquete Semanal" as it is known in Cuba is a term used by Cubans to describe the information that is gathered from the internet outside of Cuba and saved onto hard drives to be transported into Cuba itself. Weekly Packets are then sold to Cuban's without internet access, allowing them to obtain information just days - and sometimes hours - after it ...

Asian Infrastructure Investment Bank (AIIB)

Banking; Investment banking

The Asian Infrastructure Investment Bank (AIIB) is an international financial institution established to address the need in Asia for infrastructure development. According to the Asian Development Bank, Asia needs $800 billion each year for roads, ports, power plants or other infrastructure projects before 2020. Originally proposed by China in 2013, a signing ...


Online services; Internet

Spartan is the codename given to the new Microsoft Windows 10 browser that will replace Microsoft Windows Internet Explorer. The new browser will be built from the ground up and disregard any code from the IE platform. It has a new rendering engine that is built to be compatible with how the web is written today. The name Spartan is named after the ...

Featured Terms

Mark X
  • 0


  • 6


  • 1


Industry/Domain: Sports Category: Golf

table-top putting

A golf putting technique invented and popularized by LPGA star Michelle Wie. It's called the table-top style because the player's back ...

Featured blossaries

15 Hottest New Cars For 2014

Category: Autos   1 5 Terms

Law terms

Category: Law   2 2 Terms