Sökning: "modified gravity"

Visar resultat 1 - 5 av 23 uppsatser innehållade orden modified gravity.

  1. 1. Galaxy clusters and cosmic voids in modified gravity scenarios

    L3-uppsats, Uppsala universitet/Teoretisk astrofysik

    Författare :Sveva Castello; [2019]
    Nyckelord :Cosmology; galaxy clusters; cosmic voids; f R gravity;

    Sammanfattning : The so-called 'cosmic web', comprising cosmic voids and galaxy clusters, has been proven to be extremely sensitive to deviations from General Relativity. This could be further investigated by future large-scale surveys, such as with the European Space Agency satellite Euclid. LÄS MER

  2. 2. Effect of chameleons on the mass of a galaxy cluster

    Master-uppsats, Uppsala universitet/Teoretisk astrofysik

    Författare :Isabel Roca Vich; [2019]
    Nyckelord :Chameleons; modified gravity; galaxy cluster;

    Sammanfattning : Chameleons are scalar fields coming from modied gravity theories and can be possible explanations for Dark Energy. They cause a fifth force and have a screening mechanism which allows this force to avoid solar system constraints. In this thesis, astrophysical consequences of the potential presence of the chameleon field will be studied. LÄS MER

  3. 3. Compressible Waste Bin System for Public Environment : Design with a User-Centred Approach

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för ekonomi, teknik och samhälle

    Författare :Joel Nilsson; [2018]
    Nyckelord :Compactor; Waste Compression; Waste Management; Waste Bin; Industrial Design Engineering; User Experience; Usability; 3D-modeling;

    Sammanfattning : We consume more and more which also have led to an increase in the waste we most handle. In public environment, common solution have been to increase the size of the waste bin, but that’s not always an option. To big and it may interfere with the environment it placed in. LÄS MER

  4. 4. If you want to get rich, first build a road

    Kandidat-uppsats, Lunds universitet/Nationalekonomiska institutionen

    Författare :Marcus Otto Syk; [2018]
    Nyckelord :OFDI; trade; China; Belt and Road Initiative; China-centric trade network; Business and Economics;

    Sammanfattning : This paper examines the effect of Chinese OFDI on China’s bilateral trade with affected countries, to investigate the possible build-up of a Eurasian China-centric trade network. The main contribution of the paper is to have combined economics, war theory and geopolitics to analyse and produce a theoretical framework for it. LÄS MER

  5. 5. Higgs inflation

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Erik Schildt; [2018]
    Nyckelord :inflation; Higgs inflation; nonminimal coupling; conformal transformation; Higgs cosmology; cosmology; higgs inflaton; inflaton;

    Sammanfattning : In this project a recent model of inflation in which the Standard Model Higgs field with a nonminimal coupling to gravity takes on the role of the inflaton field is investigated. The tensor to scalar ratio, spectral index and the running of the spectral index  is calculated for a tree level analysis and compared with the Planck experiment. LÄS MER