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コロキウム/セミナー スケジュール 2018

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お知らせ

次々回のコロキウム/セミナーは10/19(金)の開催予定です。


         

コロキウム

  7/30(月)

--- Abstract ---

コロキウムの開催予定はありません

場所:55号館N棟2階物理応物会議室
時間:13:00-15:00


         

セミナー

  7/30(金)

"Towards non-singular metric solutions in ghost-free infinite derivative theories of gravity ”

Luca Buoninfante [Universit`a di Salerno]

--- Abstract ---

In this talk we will introduce a linearized static metric solution in the ghost-free infinite derivative theory of gravity and analyze all the curvature tensors. We will show that at short distances the Ricci tensor and the Ricci scalar are not vanishing, meaning that we do not have a Schwarzschild vacuum solution anymore due to the smearing of the (delta-)source induced by the presence of a non-local gravitational interaction. All the curvatures are regularized at short distances such that they are singularity-free, in particular the same happens for the Kretschmann invariant. Unlike the others, the Weyl tensor vanishes at short distances, implying that the spacetime metric becomes conformally-flat in the region of non-locality. The same feature also holds in the charged and rotating scenarios, where in the latter case no ring singularity appears. These results are very good hints which allow us to study and discuss some aspects of the spacetime metric in the full non-linear regime.

場所:55号館N棟2階物理応物会議室
時間:16:30-18:00


次回以降のコロキウム/セミナー

    [コロキウム]     [セミナー]


過去のコロキウム/セミナー 一覧

[Colloquium/Seminar 1997] [Colloquium/Seminar 1998]
[Colloquium/Seminar 1999] [Colloquium/Seminar 2000]
[Colloquium/Seminar 2001] [Colloquium/Seminar 2002]
[Colloquium/Seminar 2003] [Colloquium/Seminar 2004]
[Colloquium/Seminar 2005] [Colloquium/Seminar 2006]
[Colloquium/Seminar 2007] [Colloquium/Seminar 2008]
[Colloquium/Seminar 2009] [Colloquium/Seminar 2010]
[Colloquium/Seminar 2011] [Colloquium/Seminar 2012]
[Colloquium/Seminar 2013] [Colloquium/Seminar 2014]
[Colloquium/Seminar 2015] [Colloquium/Seminar 2016]
[Colloquium/Seminar 2017][Colloquium/Seminar 2018]


アクセス: [Japanese] [English]

TOPページ: [Japanese] [English]


世話人
        矢田部 彰宏 / yatabe_at_heap.phys.waseda.ac.jp
        福島 光博 / dark-matter_at_gravity.phys.waseda.ac.jp
        宮下 翔一郎 / miyashita_at_gravity.phys.waseda.ac.jp
        佐藤 星雅 / s.seiga_at_gravity.phys.waseda.ac.jp

    _at_ を@に置き換えてください



編集者:佐藤 慎太郎


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