Special character from an arXiv paper title displayed incorrectly in Google Scholar
I suspect that Google Scholar is getting the page title from the metadata of the arXiv page, which has the following title metadata (look at the HTML page source in your browser to see it):


  [1509.00976] In-Band $\alpha$-Duplex Scheme for Cellular Networks: A Stochastic Geometry Approach


The good news is, you can edit how your own papers appear in Google Scholar. 


Create a Google Scholar account if you don't already have one. Then sign in to your account.
Click on "My Library." 
Then click on the paper in question, click on "Edit," make your changes, and hit "Save."