His new film, "Blue Jasmine," amplifies the air of concentrated self-examination that has long been a hallmark of his work. Though marked by buoyant moments of wry humor, the film is devastating in its intense survey of a life in the free fall of mental and emotional collapse. Cate Blanchettgives a tour-de-force performance as a wealthy New Yorker who discovers that her husband has built their fortune through fraud. After losing everything, she winds up with her decidedly more downscale sister i…