Multiple descriptors translate to for-each in XSLT

Assuming i have such simple xml file:

<store>
    <author name="Jack">
        <book>Book 1</book>
        <book>Book 2</book>
    </author>
    <author name="Mike">
        <book>Book 1</book>
    </author>
</store>

As you noticed Jack has 2 books. I need following output after XSLT translation:

    <list>
        <author>
            <name>Jack</name>
            <book>Book 1</book>
        </author>
        <author>
            <name>Jack</name>
            <book>Book 2</book>
        </author>
        <author>
            <name>Mike</name>
            <book>Book 1</book>
        </author>
    </list>

As you noticed in the output (after xslt translation) we have 2 authors Jack with each book it has. Can we do that in XSLT. Is there some analogue of for-each like in C/Java and etc?

What if for example Jack will have 7 books is it possible to automate this, so after translation it would be 7 Jack's descriptors. Thank you.