Elastic Search Won't Match For Arrays

I'm trying to search a document with the following structure:

{
"_index": "XXX",
"_type": "business",
"_id": "1252809",
"_score": 1,
"_source": {
"url": "http://Samuraijapanese.com",
"raw_name": "Samurai Restaurant",
"categories": [
{
"name": "Cafe"
},
{
"name": "Cajun Restaurant"
},
{
"name": "Candy Stores"
}
],
"location": {
"lat": "32.9948649",
"lon": "-117.2528171"
},
"address": "979 Lomas Santa Fe Dr",
"zip": "92075",
"phone": "8584810032",
"short_name": "samurai-restaurant",
"name": "Samurai Restaurant",
"apt": "",
"state": "CA",
"stdhours": "",
"city": "Solana Beach",
"hours": "",
"yelp": "",
"twitter": "",
"closed": 0
}
}
Searching it for url, raw_name, address, etc, all work, but searching the categories returns nothing. I'm trying to search like so: If I switch anything else in for categories.name it works:

"query": {
"filtered" : {
"filter" : {
"geo_distance" : {
"location" : {
"lon" : "-117.15726",
"lat" : "32.71533"
},
"distance" : "5mi"
}
},
"query" : {
"multi_match" : {
"query" : "Cafe",
"fields" : [
"categories.name"
]
}
}
}

},
"sort": [
{
"_score" : {
"order" : "desc"
}
},
{
"_geo_distance": {
"location": {
"lat": 32.71533,
"lon": -117.15726
},
"order": "asc",
"sort_mode": "min"
}
}
],
"script_fields": {
"distance_from_origin": {
"script": "doc['location'].arcDistanceInKm(32.71533,-117.15726)"
}
},
"fields": ["_source"],
"from": 0,
"size": 10
}
If I switch out, for example, categories.name with address, and change the search term to Lomas, it returns the result