Papers in Loop Gravity and related research lines are coming out at an increasing rate. I've found this boolean search method useful at arxiv. It is a way of keeping up that takes less time since it combines the key words and phrases in a single search By searching arxiv with the same Boolean expression for 5 years: 2000, 2001, 2002, 2003, and LTM, the last 12 months, (EDIT: As of March 2, 2004)I got these annual figures Code (Text): year number of papers 2000 80 2001 86 2002 111 2003 123 LTM 132 So this is a quick method not to miss new papers in Quantum Gravity and also one possible way to gauge the growing energy in the field. This Boolean expression fits into the arxiv search form and turns up papers in: loop quantum gravity spin foam loop quantum cosmology canonical quantum gravity discrete quantum gravity doubly special relativity quantum gravity phenomenology Here's how to enter it 1. go to the archiv search form http://arxiv.org. http://arxiv.org./multi?group=physics&/find=Search 2. change author and title fields to "abstract" and the two ANDs over at the righthand side to OR 3. all three keyword fields are now directed to search the paper's abstract, fill them in as follows (loop AND quantum) AND (gravity OR cosmology) (quantum AND gravity) AND ((phenomenology OR canonical) OR discrete) (spin AND foam) OR (doubly AND special) 4. check the box that says "search all" and select the desired year 5. press "do search" ------------------------------ your browser will probably "remember" how you filled the keyword blanks out before. So having done it once, you will afterwards just have to type the first character(s), and the rest will be supplied.