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Dear All,</div>
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<span style="line-height: 1.38;">We have a seminar this week, whose details are provided below - </span></div>
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<b>Speaker: </b> <b>Sofie Ried</b> (Sheffield)</div>
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<b>Seminar date:</b> <b>24th Mar, Tuesday, 1 pm </b>UK time</div>
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<b>Venue:</b> <b>C12</b> <b>(Physics Building)</b></div>
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<b>Title: Unimodular time in black holes and quantum gravity</b></div>
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<b>Abstract</b>: </div>
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In this talk I will motivate how unimodular time, and therefore Henneaux-Teitelboim gravity, can help solve the problem of time in quantum gravity. As a concrete example we will look at Schwarzschild spacetime with a cosmological constant and see how imposing
unitarity with respect to unimodular time leads to a singularity free quantum corrected Schwarzschild spacetime. We will look at the correction terms in detail and see that they are highly suppressed and highly quantum geometrical in nature. This example spacetime
should illustrate the advantages of using unimodular time in quantum gravity.</div>
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<b>Link to join:</b></div>
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<span style="color: black;"> </span><span style="color: rgb(5, 99, 193);"><u><a style="color: rgb(5, 99, 193); margin: 0px;" data-auth="NotApplicable" data-linkindex="0" rel="noopener noreferrer" title="https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d" class="OWAAutoLink" id="OWA0187d888-8237-0c96-1615-5029def1c8bf" target="_blank" href="https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d">https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d</a></u></span></div>
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<b><i>List of the following four upcoming seminars (not everyone has given us a title yet):</i></b></div>
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14-Apr <b>Christoper Berry</b> (Glasgow)</div>
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21-Apr <b>Anish Ghoshal</b> (Warsaw) Hearing the Universe Humm with Pulsar timing array: Gravitational Waves and Primordial Black Holes from First-order Phase Transition</div>
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28-Apr <b>David Mulryne</b> (QMUL)</div>
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5-May <b>Christopher McCabe</b> (KCL)</div>
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<b>Finally the full list can be found here:</b></div>
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<a style="margin: 0px;" data-auth="NotApplicable" data-linkindex="1" rel="noopener noreferrer" title="https://www.nottingham.ac.uk/physics/research/particle-cosmology/seminars/seminars.aspx" class="OWAAutoLink" id="OWA6181cb7e-5b21-f177-ee1b-fb077759ca1d" target="_blank" href="https://www.nottingham.ac.uk/physics/research/particle-cosmology/seminars/seminars.aspx">https://www.nottingham.ac.uk/physics/research/particle-cosmology/seminars/seminars.aspx</a></div>
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Please let us know if you would like to chat with the speaker and we will arrange for that. </div>
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Best wishes,</div>
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Ed and Qi-Xin</div>
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