Ruprecht Karls Universität Heidelberg

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joint [2019/07/04 10:38]
marta [Seminar calendar]
joint [2019/11/12 12:06] (current)
manuel [Seminar calendar]
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 ===Thursday,​ PW 12, Room 106=== ===Thursday,​ PW 12, Room 106===
-== 13:00 - 15:00 ==+== 13:15 - 15:00 ==
  
 ---- ----
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-Go to the calendar of [[seminar|Cosmology seminars]] **(Usually on Tuesday, ​11am, Phil 16)**+Go to the calendar of [[seminar|Cosmology seminars]] **(Usually on Tuesday, ​2:45pm, Phil 19)**
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 ====Seminar calendar==== ====Seminar calendar====
  
-__**Summer ​term 19:**__+__**Winter ​term 19/20:**__
  
 +== 20th February 2020: Selected topics in theory and observations of Dark Energy (Tunch) ==
  
-== 26th September 2019Selected topics in theory and observations of Dark Energy (Tunch) ​==+TBA 
 + 
 +== 13th February 2020Journal Club ==
  
 TBA TBA
  
-== 19th September 2019Journal Club ==+== 6th February 2020Selected topics in theory and observations of Dark Energy (Tunch) ​==
  
 TBA TBA
  
-== 25th July 2019Selected topics in theory and observations of Dark Energy (Tunch) ​==+== 30th January 2020Journal Club ==
  
 TBA TBA
  
-== 18th July 2019Journal Club ==+== 23rd January 2020Selected topics in theory and observations of Dark Energy (Tunch) ​==
  
 TBA TBA
 +
 +== 16th January 2020: Journal Club ==
 +
 +TBA
 +
 +== 9th January 2020: Selected topics in theory and observations of Dark Energy (Tunch) ==
 +
 +TBA
 +
 +== 2nd January 2020: Journal Club ==
 +
 +Christmas break 
 +
 +== 26th December 2019: Selected topics in theory and observations of Dark Energy (Tunch) ==
 +
 +Christmas break 
 +
 +== 19th December 2019: Journal Club ==
 +
 +TBA
 +
 +== 12th December 2019: Selected topics in theory and observations of Dark Energy (Tunch) ==
 +
 +TBA
 +
 +== 5th December 2019: Journal Club ==
 +
 +TBA
 +
 +== 28th November 2019: Selected topics in theory and observations of Dark Energy (Tunch) ==
 +
 +Josue Motoa - TBA
 +
 +== 21st November 2019: Journal Club ==
 +
 +TBA
 +
 +== 14th November 2019: Selected topics in theory and observations of Dark Energy (Tunch) ==
 +
 +Leonardo Giani - TBA
 +
 +== 7th November 2019: Journal Club ==
 +
 +Ana Marta Pinho \\
 +
 +Planck evidence for a closed Universe and a possible crisis for cosmology \\
 +Eleonora Di Valentino, Alessandro Melchiorri and Joseph Silk \\
 +
 +[[ https://​www.nature.com/​articles/​s41550-019-0906-9?​fbclid=IwAR04HICL_HFWtoAIDdynFGcaBUJXGI_DL9Tc_bjA94dHrE9f9p7gsFTTmME | link to the article ]]
 +
 +== 31st October 2019: Selected topics in theory and observations of Dark Energy (Tunch) ==
 +
 +Manuel Wittner (ITP, Universität Heidelberg) - "​Challenges of Stringy Quintessence:​ the F-term Problem"​
 +
 +In light of the recently proposed de Sitter-swampland conjecture, string theory seems to favor dynamic dark energy models like quintessence over a cosmological constant to drive the late time acceleration of the universe. In this talk I argue, however, that stringy quintessence models are difficult to realize as well. I elaborate on the light volume problem and identify a so called "​F-term problem":​ The positive energy density of standard-model SUSY breaking is higher than the depth of all known negative contributions. Resolving this issue would require new, unknown contributions to the vacuum energy and therefore necessitates further analysis. \\
 +(Based on the recent paper [[ http://​arxiv.org/​abs/​1909.08625 | view arXiv ]])
 +
 +== 24th October 2019: Journal Club ==
 +
 +Arvid Weyrauch \\
 +
 +Obtaining Precision Constraints on Modified Gravity with Helioseismology \\
 +Ippocratis Saltas, Ilídio Lopes \\
 +[[ https://​arxiv.org/​abs/​1909.02552 | view arXiv ]]
 +
 +
 +__**Summer term 19:**__
 +
 +
 +== 25th July 2019: Selected topics in theory and observations of Dark Energy (Tunch) ==
 +
 +Giorgio Laverda (ITP, Universität Heidelberg) - "The entropic theory of gravity"​
 +
 +Since its first appearance in 2010, the theory of entropic gravity has been widely debated. The interpretation of gravity as an entropic force appears to be capable of describing Newtonian gravity and general relativity. In this talk I will introduce the basic principles of the theory while highlighting the controversial points.
 +
 +== 18th July 2019: Journal Club ==
 +
 +Canceled due to overlap with cosmology seminar.
  
 == 11th July 2019: Selected topics in theory and observations of Dark Energy (Tunch) == == 11th July 2019: Selected topics in theory and observations of Dark Energy (Tunch) ==
  
-Jakob Henrichs - TBA+Jakob Henrichs ​(ITP, Universität Heidelberg) ​"Milky Way rotation curve in modified gravity"​ 
 + 
 +Rotation curves of galaxies provide a strong evidence for dark matter and can be used to test modified gravity theories. In this talk I show the results of an analysis of the Milky Way rotation curve in modified gravity. I use the Horndeski Theory to derive the gravitational potential and two different dark matter models for the analysis.
  
 == 4th July 2019: Journal Club == == 4th July 2019: Journal Club ==
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 == 25th June 2019, PW 12, Room 060 (NOTE UNUSUAL DATE AND LOCATION): Selected topics in theory and observations of Dark Energy (Tunch) == == 25th June 2019, PW 12, Room 060 (NOTE UNUSUAL DATE AND LOCATION): Selected topics in theory and observations of Dark Energy (Tunch) ==
  
-Adria Gomez-Valent (ITP, Universität Heidelberg) - "​Quantifying the evidence for the current speed-up of the +Adrià Gòmez-Valent (ITP, Universität Heidelberg) - "​Quantifying the evidence for the current speed-up of the Universe with low and intermediate-redshift data. A more model-independent approach"​
-Universe with low and intermediate-redshift data. A more +
-model-independent approach"​+
  
 According to cosmological low and intermediate-redshift According to cosmological low and intermediate-redshift

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