Domain wall

A domain wall is a type of topological soliton that occurs whenever a discrete symmetry is spontaneously broken. Domain walls also sometimes called kinks in analogy with closely related kink solution of the sine-Gordon model. Unstable domain walls can also appear if spontaneously broken discrete symmetry is approximate and there is the metastable vacuum.

A domain (hyper volume) is extended in three spatial dimensions and one time dimension. A domain wall is the boundary between two neighboring domains. Thus a domain wall is extended in two spatial dimensions and one time dimension.

Important examples are:

  • Domain wall (magnetism), an interface separating magnetic domains
  • Domain wall (optics), for domain walls in optics
  • Domain wall (string theory), a theoretical 2-dimensional singularity
  • Besides these important cases similar solitons appear in wide spectrum of the models. Here are other examples:

  • Spontaneous breaking of discrete symmetries at early cosmological epochs can produce domain wall. Formation of domain wall network influence on the late stages of cosmological inflation and the cosmic microwave background radiation. Observations impose severe constraints on the existence of stable domain walls. Those constraints should be accounted for by the models of the beyond Standard Model physics. Unstable cosmic domain walls decay also should produce potentially observable radiation.
  • Latest News for: Domain laws

    Edit

    Labour legislation

    Dawn 30 Nov 2021
    THE domain of labour laws was devolved to the provinces as a result of the abolition of the Constitution’s Concurrent List in 2010 through the 18th Amendment. The centre was stripped of its power to legislate labour laws for the entire country ... There are some amendments to the law in certain provinces which could be followed by the others....
    Edit

    UK officials still blocking Peter Wright’s ‘embarrassing’ Spycatcher files

    The Observer 28 Nov 2021
    “They have behaved appallingly, as if the law does not apply to them,” he said. “It is a waste of public money over documents which should be in the public domain.” ... It is the latest controversy involving the Cabinet Office and freedom of information laws ... ‘No, that’s not lawful’, and then they change tack....
    Edit

    Cases against farmers: Will act as to Centre’s plans, says Khattar

    Hindustan Times 28 Nov 2021
    ... the Centre’s farm laws is in the domain of state governments and they have to decide on it....
    Edit

    Cases against farmers: Will act according to Centre after farm laws issue settled

    The Times of India 28 Nov 2021
    ... issue of farm laws is settled. Khattar said this responding to a query that Union Agriculture Minister Narendra Tomar had said the withdrawal of cases against the farmers protesting the Centre's farm laws is in the domain of state governments and they have to decide on it....
    Edit

    Pavan K. Varma | Opp. has done well to snub a hollow ‘Constitution Day’

    Deccan Chronicle 28 Nov 2021
    State subjects have been legislated upon through ordinances, as for instance, in the infamous three farm laws, where the Centre was very well aware that agriculture is a state subject, and no law in this domain can be passed without due consultation and concurrence of the states ... Law and order is a state subject....
    Edit

    Some Texas faith leaders are working to combat the stigma religion often places on people ...

    Alternet 28 Nov 2021
    Sometimes Forbes’ work is counseling those who have been shamed by their families or communities and sometimes she helps coordinate transportation to states with less restrictive laws ... Counsel for those heavy emotions, she said, is a pastoral domain, and the law is making it more difficult....
    Edit

    If any shortcomings in govt decisions, Opp should suggest changes. Govt should also consider these ...

    Indian Express 28 Nov 2021
    The repeal of the farm laws is going to be a major highlight of the Winter Session ... Therefore, governments decide to speed up the law-making process by putting up Bills for discussion in the public domain and Parliament, so that the common man benefits from these laws quickly ... The government that is elected frames the laws....
    Edit

    Time to open the shroud of Gandhiji, says assassination case researcher

    The Times of India 27 Nov 2021
    What you call ‘lost legal battles’ were actually steps towards winning the war for truth ... The Amicus report brought one more critical unknown fact into the public domain about the murder investigation. That there was no post-mortem of the Mahatma’s body as was required by law. It wasn’t a mere procedural lapse ... I am dead serious ... Three or more ... ....
    Edit

    For whom the vows apply: Some Texas faith leaders work to combat abortion stigma

    Lubbock Avalanche-Journal 26 Nov 2021
    Sometimes Forbes’ work is counseling those who have been shamed by their families or communities and sometimes she helps coordinate transportation to states with less restrictive laws ... Counsel for those heavy emotions, she said, is a pastoral domain, and the law is making it more difficult.On the front lines....
    Edit

    “South Sudanese women have the potential to be adept peacebuilders” – Edea Sharon, Gender Affairs Officer, UNMISS

    Reliefweb 26 Nov 2021
    The triple burdens of production, reproduction and community management rest on her shoulders yet she is not considered fit for leadership roles in the public domain ... Even when the state is making amends in terms of laws – for example, the current Land Acts have provisions ......
    Edit

    Doing your holiday shopping online? Here are 10 tips for avoiding scams

    Hastings Tribune 24 Nov 2021
    They are likely one of those companies that close up once they’ve gotten enough orders then set up a new name and new domain and do it all over again ... Do their claims about themselves hold up to scrutiny? For example, does the site claim to be an American Black-owned business but their WHOIS domain information lists a company in China?....
    Edit

    Gov. Whitmer asks Feds to fund Detroit expressway upgrades

    Longview News-Journal 24 Nov 2021
    (The Center Square) – Gov. Gretchen Whitmer has requested federal dollars to upgrade the I-375 and I-75/I-375 Interchange in Detroit ... I-375 was opened in 1964, and relied on the state’s eminent domain laws to demolish homes and businesses in the predominantly Black neighborhoods known as Paradise Valley and Black Bottom ... Recommended for You ... .......
    Edit

    Giant pipeline in U.S. Midwest tests future of carbon capture

    Reuters 24 Nov 2021
    The impasse could escalate into potential court battles if Summit tries to seize the land by claiming eminent domain ... Landowners fear that if they refuse to sign voluntary agreements for Summit to use their land for the pipeline, they could take it under eminent domain laws, as has happened with some oil and gas pipeline projects....
    ×