Essays about: "Relativity"

Showing result 1 - 5 of 93 essays containing the word Relativity.

  1. 1. Gravitational Collapse of a Massless Scalar Field in a Theory of Minimally Modified Gravity

    University essay from KTH/Fysik

    Author : Atabak Fathe Jalali; [2024]
    Keywords : Theoretical physics; astrophysics; modified gravity; minimally modified gravity; gravitational collapse; VCDM; scalar collapse; apparent horizon; numerical relativity; Teoretisk fysik; astrofysik; modifierad gravitation; minimalt modifierad gravitation; gravitationskollaps; VCDM; skalär kollaps; uppenbar horisont; numerisk relativitet;

    Abstract : This thesis explores the spherically symmetric gravitational collapse of a massless scalar field in a minimally modified gravity theory denoted VCDM (V replaces $\Lambda$ in the $\Lambda$CDM abbreviation), a class of theories propagating the same degrees of freedom as general relativity at the expense of broken 4D diffeomorphism invariance. Numerical evolution of the equations of motion reveals that for small initial scalar profile amplitudes, no black hole forms from the collapse. READ MORE

  3. 2. Bilingualism and Event Conceptualisation Patterns: Conceptual Transfer in Swedish-English Bilinguals

    University essay from Lunds universitet/Engelska

    Author : Emma Knudsen; [2024]
    Keywords : Linguistic relativity; Conceptual transfer; Grammatical aspect; Endpoint encoding; Event conceptualisation; Languages and Literatures;

    Abstract : In this paper, the event conceptualisation patterns of Swedish-English bilinguals are examined. Swedish and English differ from each other with regard to the existence of grammatical aspect, which previous work has shown to affect how speakers conceptualise motion events. READ MORE

  4. 3. WHAT CHANGES WHEN YOU USE ENGLISH AT WORK? A STUDY OF ENGLISH AS A LINGUA FRANCA IN MULTINATIONAL CORPORATIONS IN CHINA

    University essay from Göteborgs universitet/Institutionen för språk och litteraturer

    Author : Huan Luo; [2023-02-17]
    Keywords : English; English as a lingua franca; ELF; intercultural communication; workplace; multinational corporations; MNCs; China;

    Abstract : This study investigated when Chinese business professionals use English as a lingua franca to communicate in the workplace, what changes, and why and how the changes happen. 14 respondents who had Chinese as L1 and English as at least one of their working languages participated in the open-ended questions survey. READ MORE

  5. 4. Breaking the Cycle of Exclusion : Examining Effective Interventions for Second-Generation Immigrant Children in Sweden

    University essay from Uppsala universitet/Teologiska institutionen

    Author : Lucielle Disu; [2023]
    Keywords : social exclusion; second-generation; integration; Sweden; interventions;

    Abstract : Second-generation immigrant children in Sweden, especially those of non-European heritage, find themselves entangled in a web of social exclusion. Against the backdrop of escalating disparities between social strata, and a conspicuous failure in the integration of immigrants, the study explores this matter in depth. READ MORE

  6. 5. Cosmological Horizons and the Unruh Effect

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Niklas Engelhardt Önne; [2023]
    Keywords : Unruh effect; quantum scalar fields; Bogoliubov transformations; accelerated observers; Minkowski spacetime; cosmological horizons; Rindler observers; special relativity; QFT; Unruh-effekten; skalära kvantfält; Bogoliubov-transformationer; accelererande referenssystem; Minkowski rumtid; kosmologiska horisonter; Rindlerobservatörer; speciell relativitetsteori; QFT;

    Abstract : The black hole information paradox, which states that the evaporation of black holes due to Hawking radiation results in a violation of the conservation of quantum information, is arguably one of the most fundamental problems in all of modern physics. Through the equivalence principle, the essence of the problem can be understood and studied in the context of much simpler flat spacetime (described by the theory of special relativity); in this context the Hawking radiation takes the form of the so-called Unruh effect, a thermal effect in the vacuum of a Minkowski quantum field theory that can be measured by accelerated observers. READ MORE