K Space</h1> </head> <body> <h1> Kwan Chuen Chan, Keith </h1> <br> <img src="my_pic.jpg"> <br> <hr width=700 size=2 align="left" color="green"> <h4> About me (not much)</h4> I am a graduate student at the <a href="http://physics.as.nyu.edu/page/home"> Physics Department of the New York University</a>. I did my undergraduate and Master of Philosophy at the <a href="http://www.phy.cuhk.edu.hk"> Department of Physics of the Chinese University of Hong Kong</a> in Hong Kong. I am particularly interested in cosmology. My MPhil thesis is mainly to use the Cosmic Microwave Background (CMB) anisotropies data to constain non-standard physics models. Now I am pursuing further studies in cosmology, especially the Large Scale Structre of the universe. Currently I am working on N-Body simulation with <a href="http://physics.as.nyu.edu/object/RomanScoccimarro.html"> Roman Scoccimarro </a>. <hr width=700 size=2 align="left" color="green"> <h4> My research work</h4> <ul> <li> In my MPhil thesis I used the WMAP CMB anisotropies data to constrain some exotic physics models. The models we considered include the variation of gravitational constant, an <i>f(R)</i> gravity model in the Palatini formalism, variaitons of constants in the context of extra dimension models. If you are interested, you can download <a href="thesis.pdf">my thesis</a>. </li><br> <br> <li> I wrote an N-Body simulation code using the particle-mesh (PM) method. I have written a report, with emphasis on the problems that a beginner on writing a PM code would face. My PM code report is available in <a href="pm_report.ps"> ps format</a>. </li><br> <br> <li> We did the N-body simulation of the nonlinear DGP model by solving the fully nonlinear partial differentail equation. This enable us to compute the nonlinear matter power spectrum, bispectrum, mass function and bias. In particular we demonstrate the so-called Vainshtein effect, in which the nonlinear peculiar nonlinear derivative interaction drives the model to the GR limit. For more details, you can see <a href="http://arxiv.org/abs/0906.4548"> arXiv:0906.4548.</a> </li><br> </ul> <br> <img width=700 src="LSS.png"> <hr width=700 size=2 align="left" color="green"> <h4> Talks and posters</h4> <li> Talk and poster on DGP simulation given at Santa Fe Cosmology Workshop 2009: <a href="DGPNbody_present.pdf"> talk</a>, <a href="DGPposter.pdf"> poster</a> </li><br> <li> Poster on bias evolution given at Cosmology on the Beach 2011: <a href="BiasEvolve.pdf"> poster </a>. </li><br> </ul> <br> <h4 > Some of the cool sites: </h4> <ul> <li> Check out my blog <a href="http://room538ccpp.wordpress.com">The Blackboard of Room 538 </a>, and also other cool blogs there. <li> <a href="http://www.phys.uu.nl/~thooft">t' Hooft's homepage</a>, in particular his argument that how modern experiments constrain the existence of God. </li> <li> <a href="NBody_log.html"> Log of N_Body simulations </a> <br> <p> email: kcc274 (AT) nyu.RemoveThis.edu </p> </body> </html>