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Jan 13, 2010 at 4:51 comment added Emerton Bellaiche and Chenevier have a long paper/book on the topic of eigenvarieties and Selmer groups. There are (at least) a couple of people who post here who are at least somewhat familiar with it; I'm one of them, and if I get a chance, I'll try to figure out what they can prove. As for Skinner and Urban, they have annouced examples where the parity is even, the $L$-function vanishes, and the Selmer group has rank at least $2$, but no details have appeared in print. Also, as I said, I think that for both sets of authors, they may be restricted to the case of modular forms of weight $> 2$.
Jan 13, 2010 at 4:35 comment added Chandan Singh Dalawat It would be nice if someone who has read the Bellaïche--Chenevier and Skinner--Urban papers tells us what their result have to say about the question $r>1?\Rightarrow d>0$.
Jan 13, 2010 at 4:27 vote accept Chandan Singh Dalawat
Jan 12, 2010 at 5:12 history answered Emerton CC BY-SA 2.5