<div dir="ltr"><div class="im" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><p class="MsoNormal"><b><u><span lang="ES" style="font-family:Arial">SEMINARIO  DEL IFLP y DEL DEPARTAMENTO</span></u></b></p>
</div><p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><b><span lang="ES" style="font-family:Arial">Martes 10 de diciembre 11:00hs – AULA CHICA</span></b></p><p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px">
<span lang="PT-BR" style="font-family:Tahoma;color:rgb(69,69,69)"> </span></p><p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><b><u><span lang="EN-US">TÍTULO:</span></u></b><b><span lang="EN-US" style="font-family:Arial"> </span></b><b><span lang="EN-US" style="font-family:Arial">"</span></b><b><span lang="EN-US" style="font-family:Arial">POSSIBLE QUANTUM GRAVITY EFFECTS IN GENERAL RELATIVITY</span></b><b><span lang="EN-US" style="font-family:Arial">"</span></b></p>
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<b><u><span lang="PT-BR">EXPOSITOR</span></u></b><b><span lang="PT-BR">: Subir Ghosh</span></b></p><p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><b><span lang="PT-BR">Physics and Applied Mathematics Unit,</span></b></p>
<p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><b><span lang="PT-BR">Indian Statistical Institute, Kolkata, India.</span></b></p><p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px">
<span lang="EN-IN" style="font-family:Arial"> </span></p><p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><b><span lang="PT-BR">RESUMEN</span></b><span lang="PT-BR">: </span><span lang="EN-IN" style="font-family:Arial">In this talk two perspectives of Quantum Gravity induced modifications of General Relativity (GR) will be discussed: Generalized Uncertainty Principle  framework and Horava Gravity  framework. Both frameworks depend crucially on Dirac’s formulation of Hamiltonian constraint dynamics.</span><span lang="PT-BR" style="font-family:Arial"></span></p>
<p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><span lang="EN-IN" style="font-family:Arial">Generalized Uncertainty Principle framework:  Compatibility with GUP requires a generalization of the relativistic point particle model. In an external curved background this will lead to deviations from the geodesic motion leading to possible violations of Equivalence Principle.</span><span lang="PT-BR" style="font-family:Arial"></span></p>
<p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><span lang="EN-IN" style="font-family:Arial">Horava Gravity framework:  Higher spatial derivative terms are introduced in GR to improve the short distance behaviour of the graviton propagator. This extension, expected to be important at short distance (or high energy), explicitly breaks Lorentz invariance. We discuss some aspects of this in a toy model.</span><span lang="PT-BR" style="font-family:Arial"></span></p>
<p class="MsoNormal" style="font-family:arial,sans-serif;font-size:12.800000190734863px"><span lang="EN-IN" style="font-family:Arial">Signatures of Quantum Gravity effects are expectedly very small to be observed in present day experiments.</span><span lang="PT-BR" style="font-size:9.5pt;font-family:Arial"></span></p>
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<p class="MsoNormal" style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.800000190734863px"><span lang="ES">La entrada es libre y gratuita. </span><span lang="ES"> </span></p><p class="MsoNormal" style="margin-left:35.4pt;color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.800000190734863px">
<span lang="ES"><b> Lugar: Aula Chica del Departamento de Física de la Facultad de Ciencias Exactas; calle 49 y 115<br></b><br><b>Contacto: <a href="mailto:manias@fisica.unlp.edu.ar" target="_blank">manias@fisica.unlp.edu.ar</a> </b></span></p>
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