Term Query

Matches documents that have fields that contain a term (not analyzed). The term query maps to Lucene TermQuery. The following matches documents where the user field contains the term kimchy:

{
    "term" : { "user" : "kimchy" }
}

A boost can also be associated with the query:

{
    "term" : { "user" : { "value" : "kimchy", "boost" : 2.0 } }
}

Or :

{
    "term" : { "user" : { "term" : "kimchy", "boost" : 2.0 } }
}