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

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    Lebanon Reporter 02 Jul 2022
    On June 20, the Oklahoma State Supreme Court dismissed an appeal from Osage County landowner Dr. James Merrifield to overturn a lower court ruling that had allowed the city to condemn his property under state eminent domain laws ... ....
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    Lawmakers pass new limits on fireworks as July Fourth nears

    The Buffalo News 01 Jul 2022
    The law would take effect in two months ... The law allows their use on those holidays and over the Memorial and Labor Day weekends ... One for failing to perform CPR, another for Covid violations As Niagara Falls seeks to seize land through eminent domain, developer proposes $1.48B data center....
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    AP News Summary at 2:31 p.m. EDT

    The Buffalo News 01 Jul 2022
    One for failing to perform CPR, another for Covid violations As Niagara Falls seeks to seize land through eminent domain, developer proposes $1.48B data center. Shifting abortion laws cause confusion for patients, clinics ... US Court fractures decades of Native American law....
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    AP News Summary at 3:02 p.m. EDT

    The Buffalo News 01 Jul 2022
    One for failing to perform CPR, another for Covid violations As Niagara Falls seeks to seize land through eminent domain, developer proposes $1.48B data center. Shifting abortion laws cause confusion for patients, clinics ... US Court fractures decades of Native American law....
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    OpenSea reports data breach, user data leaked | Mint

    Live Mint 30 Jun 2022
    Data breach reported to law enforcement agencies. “Please be aware that malicious actors may try to contact you using an email address that looks visually similar to our official email domain, ‘opensea.io’," the NFT marketplace stated and added that the security breach has been reported to law enforcement agencies....
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    Beach returned to Black owner after 100 years

    Gulf Daily News 30 Jun 2022
    When those measures failed to deter visitors, the local authorities seized the land under eminent domain laws – designed to let the government forcibly buy land needed for roads and other public buildings ... legislature had to pass a law to allow the return of the property....
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    Row over lawyers: Delhi lieutenant governor Vinai Kumar Saxena office says taking normal procedural time

    The Times of India 30 Jun 2022
    The LG has power to take decisions in the domains of land, police and law and order ... On Tuesday, Saxena had sent a terse letter to chief minister Arvind Kejriwal, responding to Sisodia's letter accusing him of "bulldozing the law" to side with the BJP on the issue of hospitals....
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    Kremlin tightens control over Russians' online lives – threatening domestic freedoms and the global internet

    Hastings Tribune 30 Jun 2022
    Under the new draconian laws purporting to combat fake news about the Russian-Ukrainian war, internet users have faced administrative and criminal charges for allegedly spreading online disinformation about Russia’s actions in Ukraine ... The Sovereign Internet Law ... Lastly, the law promises to establish a Russian national Domain Name System....
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    Avoid using nxmesilo ... no abuse procedure as a customer

    Web Hosting Talk 29 Jun 2022
    They are fine as a domain registrar until recently they decided to put my two domains on hold without ever contacting me for an "abuse" notice. Domain 1) Domain was put on hold because of cannabis issue ... Domains and web sites prohibited by the laws of the United States and/or foreign territories in which you conduct business....
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    Bruce's Beach returned to family nearly a century after seizure

    BBC News 29 Jun 2022
    When those measured failed to deter visitors, the local authorities seized the land under eminent domain laws - designed to let the government forcibly buy land needed for roads and other public buildings ... state legislature had to pass a law to allow the return of the property....
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    From the NS archive: Enter the dragon

    New Statesman 28 Jun 2022
    In another domain Hong Kong is the testing-point for the debate about Asian and universal values ... on within the law ... the major emphasis is on Hong Kong making its own laws to govern its own future – outside the domains of defence and foreign policy, which are reserved for Beijing....
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    Universities must embark on multidisciplinary research—Prof Teye

    Ghana News Agency 28 Jun 2022
    “We have to embrace modernism, for example, the social media to disseminate research findings and publications, and also collaborate with the School of Performing Art to put their research finding into the public domain,” she said....
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    Bitcoin Songsheet: The Fiat Reality Of Real Estate

    Bitcoin Magazine 27 Jun 2022
    We have the illusion of possession when in reality it's a rental.Zoning Ordinances And Eminent Domain ... What's worse than zoning laws are eminent domain laws which allow the government to take land for a "fair price." ... What's been particularly egregious the past 20 years has been the use of eminent domain for "economic development."...

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