Essays about: "cosmological"

Showing result 1 - 5 of 77 essays containing the word cosmological.

  1. 1. Contextualizing the Sensemaking Process - A Study of Disrupted Organizations

    University essay from Göteborgs universitet/Graduate School

    Author : Erik Tollin; Rouven Hölzlein; [2023-06-29]
    Keywords : Sensemaking; disruption; disrupted; disruptive event; cosmological episodes; contextualization; social narrative;

    Abstract : This study aims to find out how the nature of disruptive events influences the sensemaking of organizational members. The general theory of sensemaking is complemented by the theory of cosmological episodes and its four stages in Weick (1993) which is used as the framework for this study. READ MORE

  3. 2. Cosmological Constraints for a Varying Dark Energy Model

    University essay from Umeå universitet/Institutionen för fysik

    Author : Abdullah Alsakka; [2023]
    Keywords : Astronomy; Varying Dark Energy; Distances;

    Abstract : This paper uses the Pantheon+ data set that consists of 1701 light curves of 1550 unique type IaSupernova to find constraints on various cosmological models and compare them with a varying darkenergy model proposed by Chevallier, Polarski and Linder in the early 2000s and analyze it deeper.The results show a tipping point from a decelerating universe to an accelerating one at a redshift ofz = 0. READ MORE

  4. 3. 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

  5. 4. The cosmological polytope of the complete bipartite graph K_{2,n}

    University essay from KTH/Matematik (Avd.)

    Author : Erik Landin; [2023]
    Keywords : Polytopes; Cosmological polytopes; Gröbner bases; Graphs; Polytop; Kosmologiska polytop; Gröbner baser; Grafer;

    Abstract : A cosmological polytope of an undirected connected graph is a lattice polytope which when the graph is interpreted as a feynman diagram can be used to calculate the contribution of that feynman diagram to the wavefunction of some cosmological models. This contribution can be calculated using the canonical form of the cosmological polytope, which can be computed by taking the sum of the canonical forms of the facets of a subdivision of the cosmological polytope. READ MORE

  6. 5. Can Dwarf Galaxies Tell Us How the Milky Way Formed?

    University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Author : Þóra Karlsdóttir; [2023]
    Keywords : Dwarf Galaxy; Milky Way; Physics and Astronomy;

    Abstract : Dwarf galaxies are a key component in understanding the evolution of galaxies and provide tests on the standard cosmological $\Lambda$ Cold Dark Matter model. According to the formation hierarchy, dwarf galaxies are the pieces that create all galaxies. Our current understanding of dwarf galaxies faces discrepancies between theory and observations. READ MORE